I just read your last post, where you said she gets up in the night and goes on the bedroom rug. Well, just put papers all over your bedroom floors, and let her pick where she goes, as I said before. I know it's kind of a hassle in the beginning with all of the papers and all, but she will pick a spot pretty quick, and then you can start narrowing down her spots. Even if she has one favorite place in every room for a while, it will eventually get down to one or two places.
