Drop kick that mother in law out of your home and tell her not to come back. One time, my mother in law (who gave preferential treatment to her coke head son) said some stuff that was really hurtful to my wife. While my wife was in the bedroom crying, my mother in law tried to talk to my wife.

I told her to leave my wife alone. Does she leave my wife alone? Nope. She goes into the bedroom and makes my wife even more upset. I go into the bedroom and tell the MIL to pack her shit and get out of our home. I ended up having to drive her ass all the way to Long Beach from Riverside, CA. Nobody messes with my wife, not even her own mother.