My cat Cortada fell out of a tree and broke both of her legs. 

I took her to the vet and at the time they only identified one broken leg and said that I could try and fix it but it was not a for sure fix because it was broken at the shin growth plate. Another factor in this was the price, the surgery to atteampt to fix the leg would have cost much more  than getting an amputation and I had money for neither.

I sold all of my musical instruments and raised $800 through Go fund me and had her back leg removed.

24 hours later she was dragging herself around with her front paws but refusing to use her back leg. It did not hurt when i touched it, or atleast she did not react but if i forced her to stand on it she would yowl. I made another appointment with the vet, terrified because i have nothing else left to sell. I was truly hoping it was just a strain or a sprain, maybe even a small fracture but no.. broken at the growth plate of the knee. I started crying instantly wondering what i could possibly do to accrue the ammount of money that was needed to make this right, with no access to loans, carecredit, or any other financial help. 

The clinic i went to decided to do it pro-bono, they are fixing her leg at no further charge to me. They are saving my little kitty. 

I wish finances had not been a deciding factor in me taking off her other leg. I wish that we could have kept it, I feel guilty that i didnt start rebuilding my credit sooner and that i got a job off the books and didnt pay taxes which made me ineligible for any and all help. I feel bad about it, but it is what it is and if all goes well in this surgery i will have a sweet little tripod kitty.

I am looking for answers to how to help a cat with 2 unusable back legs poop and pee, and if i should get a wheelchair for her while the leg heels from the surgery.

Has anyone ever had a cat without use of its back legs? 

What are the answers to these tough questions?