she is very jealous of my son and shouts and moans at him in front of me,she tries to make everything into a competion which I dont compete or feel the need to .she keeps making sarcastic remarks and its getting to the stage where I dont want to be around her or at family functions my MIL backs me up but one of these days I will flip my lid as I have been so tolerent of her.what should I do as I dont want to rock the boat and upset Bil and all concerned but I dread this and im a nice person, but would I be better just to ignore her and let her get on with it.