SIL: You need to make the kids behave and follow rules. They know better than to have their feet up on the bed.
Me: I don't care if they put their feet on the bed in my house.
SIL: Well my Dad would kick their ass if they did that in our home so don't let them do it here. Don't let them do anything we don't allow them to do over there.
Their rules are ridiculous. Half of the time the kids get yelled at for playing, talking, breathing. Would you enforce someone elses ridiculous rules or tell her no way?