She sounds stressed out to me. Do you have her in a glass aquarium? If so this may be the issue. You may need to find a way to cover the aquarium with something to make it dark in there. This will make her feel more secure.

I had a snake that wouldn't eat for 6 months or more. One day I decided to put him into a rack system, and within the week he ate. He eats religiously every two weeks now.

Hope this helps...