Dr del and zina10, thank you very much for the ideas. I will do some experimenting this weekend and try to figure something out along those lines.

kellysballs, I did recently purchase a space heater for the room, but the ambient temps in her cage are at 78*, so she shouldn't be uncomfortable.

mainbutter, I do like sliding doors, but this has been a consistant problem with this one snake. I'm thinking about buying a cage with swinging doors for her and putting one of my boas in her cage.