I live in Iowa and my girlfriend is going through a divorce and custody battle because her husband is bitter. He told her to move out last February out of her home. She moved in with me with his help and condolences. Now he plans of moving his girlfriend into her house without her permission. His name is NOT on the home at all. Her name as is his father's name is on the mortgage (the father lives in CA). What can she do to prevent his girlfriend from moving in? By the way, he has been late on the mortgage at least 5 times and it's been up for foreclosure twice. His Dad's credit and my girlfriend's are getting dinged big-time.