Hi Black Banana and welcome to Pet Talk. I don't really know if cats can get a form of the flu or not. I would wonder if maybe she ate something strange in the yard. We just recently had a couple of topics going about things that are dangerous and even poisonous to our kitties and I was very surprised how many things are bad for them to eat. It sounds like whatever was troubling her is lessening. Let's hope so. By the way, don't worry about the length of your post. Some of us tend to ramble on and on and on......