I am so sorry for the loss of your dear kitty. I too recently (dec 1) had to say goodbye to my dear Oliver who also had the wet form of FIP. After about 2 weeks of tests they (vets) finally decide he had FIP. And a about a week later he just became so weak, and wasn't eating, that I decide that I had to let him go. It's so hard to say goodbye. But know that you did the best you could for your dear one. FIP is such a horrible thing, to know that even with a diagnosis that there really isn't anything you can do for your kitty. I still have a hard time talking about Oliver to anyone. Please know that there are others here that also feel your deep pain. And remember that though she was only with you a short time, she felt loved and loved you in return.