So I should fret?
Here's the husbandry info.
Cage size: I'm not sure (I'll measure it tonight), but it's about 2'x4' with a mesh top.
Temp: I have a thermostat controlling a 100-watt heat lamp directly above the wooden hide. There's also a subfloor heater under the hide. She spends about half-time under the hide and the rest on the other end of the cage next to a large water bowl (big enough for her to curl up inside it).
Humidity: The room is dry in the winter. I spray the cage with water 2x daily, a pretty good soaking that is dry the next time I do it.
Basically nothing has changed in that cage over the past 4 years except replacing the substrate (some herp-friendly stuff like cypress mulch).
She goes off her feed every winter, but this is an exceptionally long time.