I adopted a 2-3 year old Maltese from a shelter. She is crate trained and goes well outside. The problem is that if we don't remember to take her out, she will go in the house. Is there a way that we can train her to tell us when she has to go? We always praise her when she goes outside, but I don't want to scold her when she goes inside. I think she was abused before and dont want to make her any more skiddish than she can already be. Any ideas??