Well, clearly straight up intimidating didn't work which... they apparently haven't learned yet so we can do things more subtle. Maybe I'm sending you a bunch of pictures daily of all the places you and Katie used to visit when you were younger. Your parents favourite places, your grandparents favourite places. Your favourite restaurant you go with Katie to, etc etc.
A start anyway. The goal here is theoretically to get you super paranoid and scared that we know every facet of your life.