A lot of children are raised by a birth parent and a new partner that isn't their mom or dad by blood, but performs all the labors of love and fills that role.
For some children, it's completely natural to call that person "mom" or "dad," while others opt for another nickname in order to keep a clear place in their heart for their birth parent.
The emotional dynamics around this wildly vary depending on the family, and there's no one right way to handle it, which of course makes it even harder when there's familial disagreements.
AITA for not encouraging my son to call my wife “mom”?
I’m 31 and my son is 7. My fiancé, his mom, passed away when he was born due to complications. I wanted to keep her memory alive so since he was an infant, I told him all about his mom and constantly showed him pictures of her.