One quick about my mother-in-law some of this is made up and the names have been changed so bare with me?

here are the players me (james) my wife (cindy) and her mother, my mother-in-law (marykay) cindy and I got into a fight and cindy told marykay (her mom) about what happened and marykay said some terrible things about me and now cindy and I made up why did marykay do this?