First a little background. I dont know if it is relevant or not.

I divorced my wife 3 years ago (amicably) and we agreed to sell the house and split the profit. The mortgage is with myself and her father.

Since then, I decided I wanted to keep the house and refinance it in my own name, giving her half of the estimated profit. Essentially sell it to myself. She agreed to stay to help with the finances till I could afford it.

This arrangement has been going on so long because she has been unemployed on and off for about 2 out of the 3 years. I have been supporting her during those times, paying the lion's share of the mortgage and utilities, ruining my credit rating, and can't afford to refinance. She recently got a new job and is trying to make amends and I appreciate it. I get along fairly well with her.

Now to the problem...

Her girfriend moved in shortly after the divorce (supposedly for only a few weeks) and has been here ever since. She has no lease and does not pay for anything exept some food since she has no job. She is beligerant and nasty and has threatened me with bodily harm.

I have consistantly asked them to leave since they are a couple. I know I can't legally force my ex to leave, but I would like to get rid of the girlfriend.

What can I do?