I think it's normal for her to be inactive and want to hide while she's getting accustomed to her new place. My BP Jackson has 3 hides and he really favors the one that is most snug around his body. She might be more comfortable in a tight little hide, so if the one you have doesnt fit, maybe find her a smaller one. Your temps sound pretty good! If you haven't already, I seriously recommend investing in a thermostat, they are well worth the money.