I don’t feel like I’m wrong.....

I’m gonna try to sum this up as best as I can. So my child’s father and I are not together and the breakup is still fresh. I finally gave up on it as I should have a long time ago. I was never able to forgive him for cheating on me while pregnant and downright disrespecting me! He has narcissistic behavior and he’s very manipulative. Anyway, I feel that everyone around enables him including my own mom. Everyone tried to tell me that him cheating and lying were just what men do and I would go through it whether I left him and got with someone else. I don’t believe in that bullshit🖕🏽🤷🏽‍♀️! ANYWAY, so my problem with my mom is which I addressed to her yesterday is that she enables him from learning how to coparent. He goes through her for everything, they actually talk more than we do. I told her that she needs to be honest with him and tell him he’s gonna have to learn and to stop contacting her for every little thing because one day I WONT BE LIVING WITH HER ANYMORE!!! (I’m a new nurse so I’m in the process of working so we can move ASAP)........ Then what is he gonna do? Just not talk to his child?! Yesterday he got our son and when he brought him back I was standing at the door waiting for him to bring the car seat in. My mom storms down the stairs and gets in front of me and he hands her the baby. They apparently had a conversation beforehand that he wanted her to come down and get him. So I felt betrayed? Idk if betrayed is the word to use but it’s the only word I can think of. I feel like I’m excluded from what’s going on with my own child. I didn’t like the feeling I got at all! And I told my mom she needs to honestly back off and let him learn. You don’t get to disregard me and go through other people about my child. I’m his primary guardian... Idk if how I feel is valid but now my mom is walking around not talking to me because I gave her a piece of my mind yesterday......... Am I wrong?