Checked in on Pandora tonight and noticed that she had that slight whistle to her breathing, even though she wasn't being particularly active. She was actively crawling around her tub, but nothing particularly extreme. Not sure how I feel about that. She otherwise seems fine, but still...

Part of me wonders if a recent rise in humidity may have something to do with it. Her tub holds humidity a bit too well despite a plethora of ventilation holes; it had risen all the way to the 80% range tonight between ambient humidity and her water bowl! In case anyone's wondering, ambients are 81 F (warm side) to 78 F (cool side), with a hotspot that goes between 88-90 F on the floor of the tub and 85 F on top of the chips.