Update 1: I added a few pages of crumpled up newspaper to her home after seeing her flying high again while the lights were off this morning. Turns out she was likely less-than-thrilled with her new spacious mansion and not quite ready for her own episode of Cribs. After cluttering it up a bit, she came down on her own and settled in to her hot side hide and has been happy ever since.

Update 2: So happy, actually, that she took her first meal in my care. She hadn't had a meal since 04/12, so I decided to not wait and see how she'd do. She had no problems at all with a 20g live rat fuzzy. I'm going to be switching over to f/t shortly, but I didn't want a meal refusal during the first few feedings to be due to a new way it was being offered.

Thanks for your help and suggestions, everyone!