Hi Ladie7. Thanks for working with your cat. I know it's terribly frustrating, but I think it will be worth it in the end.
Have you tried seeing a different vet for second opinion? Sometimes when a particular vet isn't helpful, another might have a fresh perspective. If you can, try to find one who specializes in cats. Hissy's website has a page on feline specialists
. If none of those are near enough to you, try doing a G0ogle search. Or, call around to various group practices near you--sometimes they'll have one who specializes in cats.
It sounds like your cat might be having accidents because of what other posters have suggested--but, I just remembered something. My dog, Tasha (who is now 15), peed all over the place when she was young. She was pretty much housebroken. She didn't poop indoors, and she urinated outside, but she also had accidents indoors. She went to a behaviorist, and the vet even recommended--just like to your cat--Prozac. My parents thought that was ridiculous, and eventually we discovered that she had weak bladder muscles
. The vet prescribed meds, which she has taken every day and night all her life (her prescription has been upped a couple of times over her life, but not by much). The only times she has had accidents since she started the meds have been: 1) When someone forgot to give her the meds; 2) When we were moving and she was freaked by all the changes. I have no idea if cats can suffer from a condition like this, but I urge
you to question your vet about it.
I'm not surprised that your cat likes her cage--it sounds like she's overwhelmed with everything that's going on. Having a small space that is all hers and with fewer stimuli probably makes her feel safer. I know that you'd like to introduce her to the rest of the house some day--just remember to do it VERY slowly, so that she doesn't get overwhelmed again. Good luck!