Just to clarify, do you have your heat sources connected to a thermoSTAT to control the temp? Unregulated heat sources can cause burns so I'd just like to make sure that you have both a thermometer and a thermostat.

Is it possible that she might shed soon? My female refuses food sometimes when she is in the blue. Also, how often are you offering meals? Sometimes offering too often can lead to stress which leads to more refusals.

I hope you don't mind all the questions!