You can't really tell how good a vet is until you visit. You also have be knowledgeable yourself, I always say "knowlege is power". I was so ignorant when I had Snowball and I feel had I done my research and not listened to the vet I was taking him to, I could have prolonged his life. And this vet was NOT cheap, so money doesn't indicate quality.
You are entitled to copies of all your kitty's lab work that you could take to a new vet so they don't have to run new tests.
Glad to hear you stopped the amitriptyline. Unless it is beneficial, there is no reason to take any med.
for Tus. I think once the calories and nutrition starts getting into her she will feel so much better.