Thanks! I appreciate your advice.

Hopefully she will be fine but she should be eating by now if she has a way to eat privately and feels sure about that. I suppose you are feeding her in that private room of hers? The pound and shelter here both give you a supply of the food the cat's been eating when you adopt -- even though they might not like it, it's good digestively to mix it in to any new food and gradually eliminate it. there's good advice above, but I really would keep a very close eye on her due to the recent surgery. Observe her tummy for redness around the incision, try to see if she has any fever, and call the pound if you find either. How's her peeing and pooping??? She should have her own private litterbox in that room too. Anesthesia can cause problems that develop in the days following surgery, and there can be other post-op complications too. This is the equivalent of a hysterectomy, and if you weren't eating after a hysterectomy, and not pooping, the doctor would want to see you pronto. Also, you should actually measure how much water she's drinking -- if she stands at the bowl and drinks for more than about 20 seconds, that's unusual for a cat and can indicate kidney problems, very common after anesthesia--in fact anesthesia is one of the primary causes of acute kidney failure in a cat. Cats with early kidney failure will still eat very enticing treats (like cheese) but they'll only eat them once or twice, and they start refusing all normal food. The pound will handle it if she needs to go back to vet so take advantage of that!