Oh, your mom's one of those who will be miserable and put herself out, just to keep the peace? I have one of those, too.

I was going to say, what are they going to do, just show up and expect your Mom to let her stay there? But if your mom would do that, it kind of defeats my suggestion of just tell them no, too bad they traveled so far, but that's not your problem.

I don't think you can do anything in regards to the police. When I lived with my mom, I went to the police because my aunt and her family were staying with us and making life hell on me and my OCD, but they said that it would have to be my mom who kicked them out...and she wouldn't do that.

I really wish you luck, but do keep us posted.