My fiancé is buying out his 1/2 of his house from his ex wife. Now she is trying to ask me for rent when he is paying the full mortgage and she is threatening to take me to court since I have been staying with him. Also his mother moved in and she's not asking rent from her. I'm just wondering what rights I have and if she can even do this. I don't even get mail there. 
   Thank you 
        Alicia