OK... time to clarify... Her hides are different. She has no preference that I can discern. She is an equal hide user. LOL... just depends which one is not on the warm side. However, she was using the warm side hide for about 15 minutes, which leads me to believe that the temps are WAY WRONG, and that is being corrected in a couple of days. Sometimes, she won't even use the hides at all, just lays around in the front of the tank. As far as her sex, the seller "popped" her... She never really ever comes out, and I wonder if it is because of the heat lamp?