Introducing my Nmom

Lurker , on mobile please excuse format.

Ok where to start? ****Trigger warning ****

So when I was about 4 older sister1 was 13 dating a 25year old. Yep not a typo, nmom allowed it and father was in prison. Nmom approved the relationship, nmom is catholic and made us go to church often. This is important to the story. I was often their chaperone, yeah 4 year old me was supposed to stop and already sexually active 13yr old and a 25 year old from doing it. Well one day I threw up all over myself because older sister1 gave me way too much candy (later we found out that it was part of her plan) so I went and took a bath(unsupervised). We were supposed to go to mass that day.

Older sister1 left without me, when I got out of the bath Nmom whooped me because she thought I had left with her. Nmom dragged me to church but older sister1 wasn't there. We waited until older sister2 noticed half of older sister1 clothes were gone and told Nmom . Nmom then directed all her anger towards me and proceeds to beat me a fling me around like a rag doll by the hair. After about 30mins of this going on older brother1 comes home from work and took nmom off of me by this point she was sitting on top of me punching me. She called me all kinds of names in the book.because it was my 4 year old selfs fault why my then 13 year old sister ran away with her 25 year old boyfriend.

This is one of my earliest memories of her. Most of my siblings witnessed the abuse but can't phantom why she will never be alone with my kids or why she's only met them a handful of times. My oldest turns 10 in a few days.

Edit: terms like moo, osoo1 oboo1 to more understandable terms sorry for confusion