If she isn't eating anything, a trip to the vet is in order. It sounds as though there's more going on than just not liking her food.

Once a medical issue is ruled out, I linked to a site that rates dog foods. You can choose any of their top rated foods, but any dietary changes should be made slowly. Sudden changes will often make a dog sick, so you should gradually add some of the new food to the old until she's eating only the new. Once she's fully adjusted, it doesn't bother most dogs if you add small portions of other foods to their basic diet as long as the majority of their food stays the same.

Here is a link that might be useful: Dog food analysis