I think it all makes more sense now. In which case, I wouldn't be worrying about it. Try feeding her in her feeding tub in a dark room (make sure your tub is very secure and also has air holes) and leave her with one mouse for maybe half an hour. She may need longer. Don't be disheartened if she doesn't eat though. It will pass. She'll be back to normal in a few weeks. If not, by all means come back and ask again as it may be for another reason. As long as she's healthy enough, not losing huge amounts of weight and drinking/pooing normally.
Hope this helps.