I have a friend in Pennsylvania that raises doxies. She has this sweet little girl named Charli Angel, she had a similar fate. She did the rehab, acupuncture, Chiropractic and Charli never has regained her hind legs.
She has a cart that she does very well with but she also like to scoot around on the floor by herself.
She always has a diaper on and my friend Bonnie says she would not put her to sleep for this. She's a very happy and well adjusted dog that just loves people and gets along really well with my dogs.
It's really an individual decision. If she's not in pain and you think she can do better in time then try it.
Bonnie and her DH still RV with the dogs and Charli loves to go too!
Sher
Doug & Sher
2006 HR Presidential 34'
2001 Ford Excursion 7.3
Lucy-"Red Fox" Lab...8/7-'07
Bubba,rescue Pom...4/1-2010
Csepki, rescue Poodle...9/15-2001