My mother in law wants to move in with us. This is a nightmare. I'm not sure how to handle this. My husband sees nothing wrong with this. He's extremly mad at me because I said I didn't want her to. We live in a small townhouse with three bedrooms and we have two kids. I didn't even get into where he thinks she will sleep at. She is making my life miserable. We don't get along and I just can't give into this. She is ruining my marriage. What should I do?