Make sure the cage itself has solid sides, back and top (covered) and is in a low traffic area. Then make sure there are at least 2 hides (if not more) in different areas of the cage. Keep the temps and humidity correct, wait a couple of weeks for the snake to feel comfortable and safe, and then try to feed again.

No handling other then needed maintenance during that time. All of mine took frozen thawed right away with this method , even though they were fed live at the breeders.

Try live food if needed. If NOTHING works, you might have to take her to a vet, so they can try to check for internal parasites, etc...

My bet is, that snake never felt "safe" enough to eat...