LOL, this happened to me too! I put the rat on the top to thaw in a bowl and when I went to find her she was gone! I was so scared, I couldn't figure how she could get out, but she wasn't under any of her hides. Then I found her all up in the hanging "decorative" vines, she was quite well hidden!
OP - I'm not sure if she will bask, as I understand it, they are more accustomed to belly heat since they are nocturnal (or crepuscular? I'm not sure) and go out and warm themselves on warm surfaces at night, but don't really get intense overhead heat. I could be wrong though, I'm not up and up on the latest studies![]()