12 years ago my parents divorced and split custody of me (16m), my brother (18m) and my sister (19f). Mom remarried when I was 6. Her husband split custody of his kids (17m, 15f) with their mom. Her husband’s kids’ mom was insane and she went crazy against my mom and the rest of us. She made threats, harassed and tried to attack my mom.

She was arrested eventually and charged with trying to assault my mom and threatening mom, her husband, me and my siblings (both full and half). My mom’s husband got custody of his kids after that and their mom served her time and got out and was given supervised visitation.

When all that was going on dad was fighting for full custody of me and my siblings. He was terrified something would happen to us because of everything that was going on. But dad was denied full custody. But after he fought long enough a clause was added that once we were 14 we could make the choice for ourselves and didn’t need to do an every other week switch like we always had.

My brother and sister made that choice whenever they turned 14 and lived with dad. But I loved mom and we had a good relationship despite it all. So I kept spending the same amount of time with both my parents.

But things at mom’s house only got worse. Her stepkids’ mom was arrested again for violating her bail conditions (I think that’s what it’s called) and her stepkids hate my mom and the rest of us. Maybe not their dad. But they are sick and twisted and they threaten my mom with theirs all the time. They hate her. They have spit in my mom’s face and talked about their mom doing stuff to put us all at risk. They fight their dad when he tries to defend or protect my mom. And their mom is due to get out again even after everything. They’ve threatened me with stuff too. Just not as often.

I told mom it wasn’t good and she should leave. She said it wasn’t fair to do that to my half siblings. That they needed us for protection and to keep some of their family together.

My last straw was when the girl taunted my mom that her mom knew a guy who liked r*ping people and she could make it happen. I told mom I couldn’t be at her house anymore and I went back home to dad and told him I was staying. He was relieved and I felt bad for making him worry longer. But my mom’s upset I left. She said she loves and misses me and my siblings and that our half siblings feel abandoned because they’ve lost all of us now. She told me she would never let anything bad happen to me. I told her she can’t control that crazy women or her stepkids.

AITA?