Cats can be truely finicky, and unlike dogs won't necessiarly come around and eat what you give them. IF you are worried about her food intake--you just want to get calories into her--try tuna fish from the grocery store. I've never known a cat that won't eat it. Also, try fish flavored canned food, the stinkier the better. Whitefish recipies tend to be especially smelly. But it just may take her a couple days to settle in, especially since she has reserves to live off of.
If after a few days she's still not eating and is refusing such goodies as tuna, I'd take her to a vet just for a look-see.