My Grandmother has been letting some family members live with her for the past three years. They don't pay rent, she pays ALL of the utilities and she continues to live there with them. Recently she asked them to leave and they refused. She was afraid and came to stay with us for a few days and while she was gone they changed the locks and she can't get back into her own house. She is taking them to court and they are treating it like a landlord/tenant case. Do they have any rights to the house in this situation?