True, you can't force them out, but there are sometimes ways to get them to gladly go

. And perhaps even have them run. I'm not recommending it, but it happens.
As for restraining orders - huge joke. A lady not far from me was recently killed by her ex boyfriend. She had a restraining order against him. She called LE when she saw him pull up, but she only had seconds to live, and they couldn't get there in time.
As for having to live under the same roof with someone you believe is a lunatic out of fear that your leaving could be construed as abandonment. That's just so sad. I've known people who have had to do that.