Can you post a pic of her setup? I still think she might just need some more privacy. I'd try throwing a towel over her tub next time you feed and leave the room for a few hours. And don't forget to take the rat out if she doesn't eat lol. I've never had any issues when leaving a rat overnight. The only time something bad happened was when a pink got stuck to the bottom of a tub. THAT was nasty haha.