My question involves a marriage in the state of

a
My wife cheated on me then abandoned the property. My daughter and her family moved in with me and was going to buy the house from us. Only to be left at settlement table with no wife. So she was in violation if our sales agreement. Now. She and her boyfriend r getting evicted and she wants to move back into our home. I don't want that of course. And I feel her to be abusive and misleading. Can I keep her out? Oh and this separation is about 1 1/2 yrs old. What do I do.