Luz loved a lot of things about being on the boiling isles, the ability to use magic, Being able to make friends, her new mentor/teacher/caretaker Eda, Hootie and King and of course her loving girlfriend Amity. But what she loved the most was how little witches and the like tended to actually know about humans, even a so called human expert like Eda herself. 
See, Luz had a little kink or two she had been DYING to try out, but there was NO WAY she was gonna ruin her relationship with amity by asking her to indulge her when they had JUST started dating, even she knew better then that. But with how ready to look after Luz when she was sick Eda could could be.. well.. How could she NOT take advantage?
Of course, if she'd had any idea how bad this would turn out...

The plan started one day after hex school, with Luz coming home and rubbing her tummy and groaning softly, then flopping onto the couch,. closing her eyes. Eda was in a chair reading the newspaper and King.. was off doing whatever craziness he liked to get up to.  Opening one eye to peek, and seeing Eda was STILL reading her news paper, Luz closed her eye and draped a hand over her forehead and let out anther groan, louder this time.
Of course with her eyes closed she couldn't see Eda lower her paper, looking over with her glasses on, then shrug and pull it back up so thinking she STILL wasn't getting a response, Luz let out a even LOUDER groan, tossing in a whimper after for good measure.
Hearing Eda sigh and get up Luz's open her eyes, trying not to smile as Eda looked down at her.
"Ok kiddo, what's up? Rough day at school? you and amity have a fight? is there someone I need to terrorize as a harpy for making you miserable?" Eda asked, motioning for Luz to sit up and then sitting next to her when she did.
"N-No nothing like that.. it's just uh.. a human thing that.." and Luz didn't have to fake the embarrassment, suddenly having second thoughts about her plans. 
"What is it? gas? growing pains? I Assure you that I'll be able to handle it.. I AM the human expert after all~" Eda said with a smirk on her face. 
Knowing she couldn't fully bail on her plans now but cutting something out of it, Luz's slowly spoke up. 
"W-Well did you know that humans from the age of 10 till 20 need a really harsh, no mercy spanking at least once a month?" she asked, looking away. "If we don't get it, we start to get sick.. I-I haven't told you because well.. I mean.." and Luz trailed off, knowing her 'confession' about her 'condition' would sound SUPER believable.
"..Well I heard something like that.. heard it was called a attitude adjustment.. jeez I didn't know you got SICK though!" Eda said, shaking her head then wagging a finger in Luz's face. "Well, only one thing to do about it now.. Come on kiddo, I better give you your medicine." Eda said, standing up and holding out her hand. 
"I-I Uh.." Luz Squeaked, unable to believe it had been THAT easy and fighting HARD not to get giddy. 
"Unless you'd prefer me to spank you in the living room, but people CAN see in the windows you know." Eda chuckled and winked.
"Ah! No! Uh, lets go to my room!" Luz said quickly. 
"Actually, we'll go to mine, I've been prepping incase you needed a 'attitude adjustment' and got everything we'll need." Eda said flashing a grin and taking Luz's hand, leading the now worrying girl away.
'why do I get the feeling this was a BIG mistake..' Luz gulped holding her tummy as she walked beside Eda, which ironically was getting upset slightly from worry.. and only it make it look like she was in DIRE need of her 'medicine' 

Luz's gulped deeply as she came Into Eda's room, worried now that the human 'literature' that the witch had found was nothing but spanking porn but she was in WAY too deep now to pull out. 
'then again, likely only get a mild spanking for lying..' Luz thought, daydreaming about being over the lap and then maybe a mouth washing.
she snapped back as Eda let out a "AHA" and pulled out a large trunk, opening it and oh geez balls! The trunk was packed with tons of paddling, cane's, brush's, restraint's, a enema kit and even...
"A-Are those.." Luz squeaked out, squirming BIG time now, as she looked at the thick bulky white diapers Eda was laying on her bed. 
"Diapers? Yeah! I heard humans over due for a attitude adjust get better faster with them. and since I assume you wanna go to school tomorrow and see your girlfriend.." Eda trailed off and winked. "Don't worry, Momma Eda has your back!" she said and gave a thumbs up, then reading for a basic hair brush.
"..M-Maybe I should just s-spank myself.." Luz said, face going crimson even as she found herself mentally squealing. 
"Heh, I know, you humans get second thoughts but I know the magic phase to get you over here." Eda said and winked again.
"H-Huh?" Luz asked, not knowing magic could work like that. 
"You have till the count of five little lady or it's gonna be worse." Eda said with a smirk.
Yeah.. this might of been a bad move.

Pants and panties down and over Eda's lap, she was shocked over how nice the owl lady was being even if she was about to blister Luz's buns. She was rubbing the small of her back and giving a speech about how she was only doing this because she cared about her, though Luz's mind kept slipping in and out.. at least till the first wallop with the hair brush.
A primal cry came out of Luz, the swat fucking HURT even as it made part of her quiver and she looked over her shoulder half expecting to see a indent where the brush had been. 
of course there was only a red mark and Eda chuckled.
"Sorry Kid, from now on I'll give you mild spankings at least once a week, but gotta go all in here." She said and raised the brush again.
"W-Wait!" Luz cried out but it became QUICKLY clear that Eda had no intention on halting from giving Luz her 'much needed medicine'.
As her buns were walloped over and over, making the poor wanna be witch sob and cry out, her tears flowing down her cheeks she couldn't help but be touched that Eda was doing all of this thinking it really was a much needed treatment.

the brush spankings were FINALLY over and Luz's butt hurt more then the time she'd stuffed her panties with poison ivy (don't ask) as she laid over Eda's lap, sobbing and hiccupping while catching her breath. Ed was rubbing her back again and whispering soft words of comfort before reaching into the trunk and pulling out a paddle.
"W-Wait! Don't you think I-I.." Luz stammered, again part of her wanting it more then anything and the other half, worried she was about to wet from terror.
"Oh, I wanna think that was enough.. but that would be showing MERCY!" Eda said, shaking her head and frowning. "And what did you say you needed?" 
"I..I..I" Luz stammered, new tears in her eyes. 
"You said you needed a no mercy spanking so sorry, but can't hold back." Eda said and then brought the paddle down on Luz's bubble butt, hitting both cheeks at once.
it was right about then that Luz realized a few things in life:
1) Lying was bad.
2) if she was gonna lie, pick her lies more carefully.
3) A paddle in the right hands made the hair brush seem like nothing, and Eda was the right hands.
"SHUT OF A MOTHER FUCKING WHORE!" the wanna be witch cried, out, getting a short break from her spanking, So that Eda could go and wet a bar of soap and pop it in her mouth. 
the rest of what she said while her butt was punished to the extreme, forming bubbles and giving up any fight as she was spanked into submission was untranslatable to most. 
Most but not all since Eda had MAYBE spanked her sister like this once or twice. 
"I deserve this!" was what she cried out in naughty girl bubble tounge. 
"Yes, you do." Eda said, shocking Luz's for a moment as the brat realized she could be understood. 

With her nose in the corner, bar of soap still in her mouth and hands on her head (rubbing her bright red buns would of made Eda start all over again) Luz's didn't dare look but could hear the owl lady setting up a enema bag for her, and squirmed in the corner. 
'Ok.. Stop that now! the horny is what got you INTO this mess!' she scolded herself. 
It was more the pain and humiliation driving her right now, she had never really thought about getting a enema before. sure she had pictured diapers after of a spanking, but more that they and lotion would be used to sooth her buns.
Now, judging from how long Eda took too fill the bag AND the chuckles coming the bathroom.. It didn't sound like the diapers were gonna be used for soothing at all.
'Nggggh.. this has gone WAY too far! I didn't want this!' Luz whined mentally, though by this point she knew a very simple and sobering fact: Her wants didn't really matter.
With everything apparently set up, Eda whistled and Luz's turned around, seeing the 3 quart bag filled to the seems and sucking on her bar of soap like it was a pacifier out of instinct.
NOT helping matters was the size of the nozzle that was going to be going in her rosebud. 
'...next time I get a kinky idea I'm just taking a cold shower' She whined to herself, coming over and letting Eda remove the soap from her mouth, replacing it with a paci that had been dipped in honey. 
Seeing Luz look shocked and then smile and suckle in earnest, Eda smirked.
"I'm not TOTALLY heartless!" She teased, then added. "Even if your about to get a hot water soapy enema." She added with a soft cackle.
'...I think I would of kept the soap for a warm water enema.' Luz thought dryly but now over Momma Eda's lap, it was too late to argue, and she almost lost the paci as the enema nozzle went in.
'WHOA BLACK BETTY, BAMBLE JAM!'

Amity blushed as she came up to the owl house. She could tell that Luz had been distracted all day and wanted to try and make her girlfriend feel better. To that end she had a box of candies that Luz liked and a copy of her favorite novel, planning to read to Luz with her head in amity's lap, knowing how much her girlfriend loved that.
Hootie, having been one of the ones trying to hook them up, let her in with no issues, even giving her directions on where to find Luz though keeping the details to himself and she quickly climbed the stairs, slightly confused as to what in the world Luz could be doing In Eda's bedroom.
As she got to the door she heard muffled sobs and what sounded like slaps, and kicked the door in. 
"Get away from my.. uh.." Amity yelled, summoning her magic, ready to take on Eda then paused at the site of her girlfriend getting a Enema, with clearly spanked cheeks that were getting follow up hand swats.. and Luz's was sucking on a pacifier with diapers ready on the bed.
"I.. What?" she asked, her magic fading, head tilting to the side. 
"oh Hey amity, come in, just giving Luz what Humans need once a month. she's a little bit busy and can't talk, but I can answer your questions." Eda said, cheerfully and pausing her swats.
"That's... good. Because I have SO many!" the young witch said, even as she blushed and squirmed, picturing herself in Luz's position.

Luz could only suckle on her paci and squirm as the last of the enema drained into her as her girlfriend was told 'what she needed' once a month, and then Eda's plans to do it once a week to make it easier on her. 
forget biting off more then she could chew, this was a whole all you could eat!
"so.. once a week your gonna spank her, give her a enema and diaper her? like a naughty little girl?" amity was asking and Luz's looked over.
her girlfriend wasn't grossed or or shocked, if anything, she was squirming and looking much like Luz had before this started. 
which meant..
'Son of a bitch! we could of been doing this to each other with safe words!!' she fumed even as her tummy cramped and her guts churned.
"Yup, that's the plan.. unless you wanna do it to her. it's for her own good." Eda said, a amused tone in her voice. 
"I..I don't think I could ever.. you know.." Amity said, blushing worse then normal which said something. "But Uh...I could.. Suffer with her.."
Luz smirked despite her pain, as Eda raised a eyebrow. 
"Oh, you wanna get spanked, filled up and diaper filling too?" She asked.
"W-Well.. just t-to show support.. ya know?"
"oh of course.. just to show support." Luz could hear that Eda didn't buy it for a second. "in that case.. let me get the baby diapered and then I'll go and start your treatment.. lose your pants and undies." Eda said, turning away from Amity who Luz could make out sliding her pants and undies off like they were hot fire. 
'no way, she's not really..' Luz thought.

Eda smirked as she tapped Luz into the first of many diapers, having used a demon version of ginger root that would burn but then dissolve as a plug to keep anything from coming out. with the bulky padding taped around the hips of her kid she set her behind where she would be.. but left a pillow for Luz to hump while winking and watching the truth dawn in Luz's eyes.
She hadn't been fooled for a single minute when Luz had told her lie. Of course that was mostly because she had read Luz's dairy while bored but anyone could of told what the brat wanted, same with her little girlfriend. 
Giving Luz's a wink and putting a finger to her lips while her back was to amity, she patted Luz's massive diaper butt then turned her attention to her second new baby.
getting the girl over her lap and grabbing a brush, she started to punish the young witches behind much like she had Luz's, though amity clearly was having no regrets as she gasped and bit a lip, quivering in delight.
the best part of all of this was Eda knew there was no way Luz would reveal the truth now, seeing her girlfriend loving this even more then her and as Eda went to work she wasn't shocked at all as the bed started to bounce up and down slightly.. Luz's making use of her pillow. 
'You know.. sometimes it awesome to be me~' she thought as she kept up her work. 

The end