have you tried her on white fish and rice or chicken and rice some foods are too rich for some cats and they easily get upset stomache also a good idea is to go to the vets and the receptionist can advise you on what hills science diet would suit your cat best . they really dont cost much more and they are better made than supermarket brands , also james wellbeloved from petshop/vets is another pure gentle dried food full of all the esential nutriants your cat needs without any of the crap