Mom is mad I gave primary custody of my daughter to her dad

I have NOT been in a good place lately. I'm not gonna go into details but... It's been hell and life continues to hit me.... I have a baby and she doesn't need to be going through what I'm going through. Me and her dad had 5050 custody but he has primary now and I'm paying child support. It's what we agreed on. I see baby girl every weekend but really it's whenever I want and I'm over there almost every day. My mom is mad and here's the reason why. She simply doesn't like my baby daddy because he's emo and a godless heathen. She believes he's a Satanist and he's not. He's an atheist. His wears eye liner, black nail polish, emo hair. All that shit. And he listens to "emo" music. Panic! MCR, Breaking Benjamin. And whatever else he listens to. But he's not a bad father. He's a great good father. My mom is saying I'm selling my baby. Honestly my mom doesn't even know I left Christianity and you know what I said to her. I told her when I asked you for help that would have helped me be able to keep 5050 you said you would pray for me..... So yeah.. She's perfectly fine and happy with her father and I still see her.

Me and my baby daddy have a great relationship. We aren't even ex's. We are friends who hooked up once