This is not the story I wanted to write, but whatever.
Gabby opened her eyes and instantly knew that something was off.
She wasn't home. She wasn't on her bike. She wasn't wearing her usual stuff. She had a hard time focusing her eyes. And she couldn't move her arms.
At least she put together where she could be, so with a lazy tongue she called out: "Wha... whuu mmm... nnnurse...?"
The door to her room was open and a nurse just passed by with some bed sheets stacked on her arms up to the nose. She stopped in her tracks and made a sharp turn with a smile "Ah! Miss Humberl! Good to see you awake." The sheep dropped the whole stack on an empty bed, made sure it wouldn't fall, then paid her attention to the wolf in bed. "I will call a doctor for you right away. After I changed your bag."
Gabby still had a hard time understanding what was going on her head just followed the sheep in a rolling motion. "Oh dear, you're still not there yet. And I see you didn't have to go too."
"... Go where...?"
"Haha. Oh silly. To the bathroom of course."
Gabby tilted her head and fell asleep again.
When she woke up again, her head somewhat clearer. She just had to concentrate to think and remember. Looking down, she saw her whole right arm up to the shoulder in a cast and suspended by a loop dangling over her head. Her left wrist was in a cast as well, only the fingers poked out. Everything felt kind of numb.
"Uuuuh... Nurse?" she called out and a few moments later she heard footsteps coming down the hallway. Once again, she saw the sheep entering the room. "Good evening, Miss Humberl. How are you?"
"Wha happen?"
The sheep stepped up to the bed and felt Gabby's forehead. "I was told that you had an accident with your motorcycle. Do you remember your name?"
Gabby groaned. She still can't remember the crash, but an accident sounded bad. "... Gabby. Humberl."
"Good. How do you feel?"
"... hazy..."
"I bet. The drugs will wear off in an hour or so and the doctor told me your arms will be fine. "
"...yaaaayy..." Gabby tried her best to sound sarcastic.
"Okay. By now you surely filled the bag." The sheep turned around and bend down to look under the bed.
"Bag?" She was too confused to pay attention to the very short skirt pulling dangerously far up.
"Uh? Nothing? What the?" The sheep got back up and followed a small tube up under Gabby's blanket and lifted it. "Ah. Oh boy. Sorry. I guess I forgot to open the valve. Do you have to go badly?"
Gabby watched as the sheep turned the plastic valve next to her hip.  It took a few more seconds for her to see where that tube went. It went further up, made a loop on her belly and straight down into her grey sheath. "... the fuuuhgg..."
A few more seconds of silence in the room.
"Miss Humberl?"
"Huh?"
"Do you have trouble peeing? I think I can see your bladder making a bulge here." The nurse put a hand gently on the soft exposed lower belly fur and felt around it. "Do you need some assistance?" She asked in a very professional manner, but Gabby's eyes went from the white hand, that was very close to her penis, up to the sheep's face and nodded with a dumb smile.
Oblivious to Gabby's immature grin, the nurse put on a latex glove and inserted two fingers into the soft sheath to hold onto the catheter. "Hot..." Gabby mumbled.
"Okay, I will apply some pressure on your bladder and you just let go. Do not tense up your stomach, just relax. Okay?"
Gabby listened to her words and replayed them in her mind, to understand what that sexy sheep wanted from her. She figured she doesn't and supposed it would be best to do nothing and agree. 
"Yeah."
"Great! On three."
Gabby kind of knew it had something to with peeing.
"One."
Wasn't there something she always did herself?
"Two."
Something she should tell the nurse?
"Three!"
Meh. Can't be that important.
With a skilled, well distributed press, she forced the wolf's piss down the urethra. Gabby gasped and giggled at it and sighed as she felt the relief.
"Ahh.... nice." Both women could see the clear tube filling with a golden substance.
"There we go! My my. You must've had some traini- What the!?" The nurse looked lower on Gabby's body and saw a liquid pooling between her thighs. "Oh shoot!" she reached the arm from the bladder across the other and lifted Gabby's balls. She was greeted with a foot high squirt of pee from Gabby's vaginal urethra, almost hitting her face. "Oh shoot oh shoot oh shoot!" The sheep acted fast and dropped the sack into the tiny pool, sending a splash of hot piss over the sheets. She switched hands and reached with the gloved hand into the pee and fumbled with her fingers around at Gabby's labia. The wolf moaned and tilted her hips up, making the sheep slip down into her pussy. "Oh yes, baby! More!"
For the sheep things went out of hand more every second. "I'm sorry, Miss!" she pulled her finger out and fumbled around the wet pussy, trying to find the pee hole, but with the glove on, she couldn't feel a thing. When she wanted to switch hands again, she saw the red tip of Gabby's cock creeping out its protective sheath. "Nonono!"
In her haste, she moved the catheter in and out some, which made Gabby take a sharp breath. She felt everything, but most of all, she felt the rim at the catheter's end kind of scraping in her tight hole close to the taint. She still enjoyed the sensation and tilted the hips back and squeezed her legs together. "Fuck... ohh!" If she had a hand free, she would jack off. But right now, the panicking sheep had a tight grip around the tip of a now growing erection, which also pulled more of the tube out.
The nurse had to manage the situation cross-armed again. The lower position of Gabby's groin allowed more to pool and the sheep had to dunk her whole hand in hot piss. "Ew! Ew! Ew!" She stroked up and down between the labia to feel out a tiny hole to put pressure on, but with the first try, her finger slipped in again. Gabby moaned loudly. "Sorryyy!"
The nurse said quickly and pulled it out. Was Miss Humberl's vagina getting tighter?  She went half an inch higher and applied pressure but found no hole here. Instead, she found a nub, which confused her and circled around it a few tim- "Oh gods!" 
But Gabby didn't mind. "AHN! That's it! Rub my clit! Sexy beast!"
The nurse went back down and pressed the index finger back into the tight hole.
Gabby gasped again and tilted the hips back up. Moaning in pleasure and pinching a nipple with the only two fingers that were free. The sheep just watched embarrassed with red cheeks under the white fur. "Please! More!"