Thanks for your reply...

She is in a glass tank 30Lx18Hx13D (don't remember how many gallons); I have a 75 watt red heat bulb above and a heat mat covering about 1/3 of the tank bottom, covered with aspen wood shavings. I have noticed since the weather is turning colder that I'm having trouble maintaining a constant temperature. Right now it's 81 degrees on one side and 86 on the other. I do struggle to keep humidity at a proper level because I don't always remember to spray her tank.