Hello,
Wowza. That’s quite a story. I think I would recommend the following options to discuss.
1. Seek a feline exclusive practitioner. If available they are really helpful for the tough cases.
2. Consider an ultrasound.
3. Add cosequin daily
4. Consider an iv fluid hospitalization to really flush out the bladder
5. Xray of the body. May or may not need to do if doing ultrasound
6. Add a fountain, feliway and lots of litter options. Even a very low litter box like a baking sheet.
7. Environmental enrichment. Toys. Catnip. Window seat with bird feeder view. Etc.
Let me know what happens.
Hello
These are often complicated issues involving multiple underlying things. To include diet, litter and litter box dislikes and environmental stress. I would look for a vet who specializes in feline medicine and place different kinds of litter boxes and litter types for your cat. Also make the area your cat lives in is as free of stress as possible. Calm quiet and easy to access all of the things she needs. Like fresh high quality canned food. Fresh water. And immaculately clean litter boxes. Also I add an anti inflammatory like dasaquin and a pain medication. I like gabapentin but your vet might use something else. Also ask about learning how to give sq fluids at home. Follow up with a urinalysis too.
Good luck