Correct. Most likely just warming up her feet. You can throw down some straw or leaves for them to walk on.My first thought (well, after I finished panicking that she was ill...) was that she was trying to warm up her feet by laying down on them. Is this something they do? The only time I've really seen them lay down is if they're ill (which she doesn't seem to be) or injured (which she also doesn't seem to be), so now I'm kind of worried about her.
Thanks in advance.