So here's the deal, my girlfriend's dad is a brutal bitter old man. He hasn't had a job in 5 years, he stomps around the house half-naked, hurls abuse at my girlfriend and friends, and supposedly USED to hit my girlfriend and her sister. I don't buy the USED to part, the man is such a loose cannon that I actually fear for her life. I'm not sure what I can do to protect her other than keeping her out of the house.