Er..righto.

If it's a sudden thing, take her to the vet. Eating perfectly fine one day then not eating much the next can definately be a sign of a medical problem. If the vet rules out any medical problems, let her decide when to eat. Kai's a picky eater so I had a tough time having him eat. What I did was, I'd crate him and give him his food. I'd leave him in for 10 minutes. If he didn't eat, I'd take it away and try again an hour or two later (sometimes longer). He soon caught on and knew that he'd have to eat right away or he wouldn't get any food.