I think all you can do is to keep offering anything and everything.
When my boy was refusing to eat he was offerred everything Morrissons had on their shelves. Fried Liver, sliced ham, sliced chicken breast, fish (all types), cheese, buttered bread/toast, cake (sponge cake is good), cat food (smells good, cats are picky) and anything we were eating.
At least if she has had a drink that is something. You could try a bit of honey in the water (or glucose powder, you can get it in most chemists and supermarkets).
It is so difficult when they just turn their head away, my boy did not eat or drink for three days (or go outside for a wee). I really thought I was loosing him, then on the third night about 10 oclock he had a piece of ham! I was over the moon!
All you can do is keep trying, if she really will not eat you cannot force her.
Are you managing to get any tablets (from the vet) down her?