She is a guest and not a renter so you do not have to give thirty days notice [there is no lease that you are terminating]. Tell her she has to leave and is trespassing if she stays. The problem will be that she will not leave and the police will not likely do anything to help remove her [will say it is a civil matter]. When she is out, change the locks so she can not get back in. Also, you need to make some written agreement with the father as he still is the owner and your paying the mortgage does not give you any legal rights. Your not being married to your boyfriend also puts you in a position of his eventually dumping you and you will probably have no right to the property or to get back any of the payments you have made [it will be considered rent].
Answered on Jan 03rd, 2014 at 10:40 AM