Thanks! I got clips for the cage, but since I'm not sure I used them right, I also have three heavy books sitting on top for now. I have an under tank heater, but since I didn't know I needed a thermostat with it, and our room temperature is about 80, I have it off for now. I have one on the way, so hopefully she isn't too cold... I've been turning it on in short bursts every now and then because I'm worried about her. She finally settled down now, and is curled up in a hide.