@L-B-Heuschkel I went very low contact (and remain that way for the most part) after my mother's latest abusive rampage 6 years ago. It was a tough decision bevause I am their only child and therefore feel a moral obligation to the parents that raised me. But it was the right decision.
I did break explicitly with her (in other circumstances I would have just not contacted her further and blocked number) because of her actions at that time which she could not present away like her verbal abuse that didn't happen in front of witnesses. Since she did not want to be embarrassed by people asking questions she kept our break on the down low.
Thats a fortunate experience though. I know how hard it is to go no contact when it means your parent will try to rile the family against you. So I am so sorry you are in this place, and especially if you have complicit family to deal with.
I do think though that when you know it's time, its time. And its not that it isn't painful in some ways but I think at least for me it has been what I needed and I do not regret anything. If you decide to break contact I hope you'll find the same.