I got her on Wednesday morning and now it's Saturday, and we decided to feed her for the first time, and the pinkie was too big for her so we cut its head off and offered that. We had her in the container she came in in her cage for a few hours and she didn't touch it. We had the container on the cool side, is that okay? I'm going to wait a while and try to feed her again, should I use the same head or a different one. She's about 11 inches long, in case that helps. I'm worried about her because I've never had a snake before, so I'm not experienced and I really need your help.