So my SO has kids from a previous relationship and the mother of his kids is young and immature. To give you a clue I'm 4 years older than her and my SO is 7, and even though I'm only 4 years older, I've been on my own since I was 17 (almost 10 years ago), and her family treats her like a baby.. she's never been independent,had a job, and still lives at home with her family. Anyway my SO always feels the need to get her approval for anything he does or anywhere he takes the kids. She even has specific days for him to get the kids and if wants them longer or outside of her set/party days then she trips and has a fit. Recently , we planned a vacation and he's scared to tell her about it and us taking the kids to the beach b/c she may trip. I understand she has full custody. Yes, he is on child support and he's in the process of getting a lawyer to have visitation and rights as well (as of now he doesn't have any rights though)..ive told him plenty of times that I feel he doesn't need to seek her approval for anything. Those are his kids...and we should not have to be limited to her terms only when in my eyes she isn't even an adult yet. Half of the time she doesn't even know how to make decisions. Almost every time he wanted to do something in the past with the kids she ALWAYS repeats what her mom or auntie said and why they said he can't get the kids rather than she making the decision. And every time her and my SO gets into about the kids she'll make her sister or mom call him on the phone to try to make up with him (after he's pissed and ignoring her games for days) instead of her being an adult and talking to him as parents should. Like literally, this girl never makes her own decisions and plays on the phone like a little high school girl instead of talking like an adult. I told my SO to do what wants....when he gets the kids all she needs to know is that he's got them and he'll bring them back when he's supposed to. But he shouldn't be limited to getting them on her convenience or terms only (especially when he works) or afraid to take them places b/c she'll act out. What do you all think? If she can't be an adult and make decisions like one then she has no say in whatever??