Okay, I'm gonna play devil's advocate here. Did they bother to check her urine for crystals in the very beginning and continue to check for them??? Amitriptyline, from what my vet told me when I brought Buddy in for inappropriately peeing, has not been tested on cats and will make them lethartic and grouchy. He told me they use is as a last resort only!!!

He gave me a spray bottle of Feliway and told me (after check his urine) it's a behavioral problem, not a medical problem. He explained that I should spray the Feliway and isolate him in a room. Feliway has an exzyme that only cats can smell and it calms them right down. It worked so great on Buddy and he's finally calm and knows he's not going anywhere.

Please, before trying any kinda drugs lke Amitriptyline. you'll give the Feliway spray a chance.

Good luck and please let us know how you make out.