I will try the Hills diet, thanks for the link... they actually have a store here in my city that sells it.
When I asked my vet, they just say to keep her on their food. I tried her on a duck wet food last night, to see if she would have a reaction. Other than eating it in one gulp, she was fine. So, I think you guys were right, it's probably not all meat that affects her, but other fillers.