monster in law

I have to begin with my mother and my mother in law were best friends. my mother babysat my husband and his brother. the families we do things together. we just got married last Oct. the planning was horrible. my mother in law was being sneaky and playing games. (now my husband wanted his niece to be the flower girl) she would start issues for my mother because my little sister was also going to be a flower girl...weeks of nasty things went I and I would come home and cry and be phisycal ill. my husband thought I was going to leave him because of his mother. I told him no that he is stuck with me. so he thought his mother, him, and I should sit down and have a talk. at the end of the talk she admitted dvoing the horrible things, never said I'm sorry and that was it.