Oh my goodness, some truly horrific stories on here. I'm so sorry you had to live through it and proud of you all for surviving it.
Mine feels so much more minor compared to these stories.
My Mother used to hit me a lot, whenever I disappointed her (which was often). My father was once riled by her into attacking me and strangling me with his belt until she pulled him off me. Blaming me of course.
She ran the Saturday morning language school and the year she was my teacher was the year I started going there and back by bike to avoid being beaten up in the car for my behaviour on the way home. Fortunately she was a bit "out of sight out of mind" so I learned to be out of sight quite a bit.
I've recently moved back into the granny flat of her house after a disastrous break up which left me financially destitute. But the only reason I've done that is that she is so frail that she physically cannot enter that granny flat. I see her when I go into the main house only.
But I grew up a bit of a scrapper and will verbally argue with her a lot since I moved out in my 20s. She hates having her behaviour thrown back at her and I do it whenever she tries to have a go at me and she finally learned some self preservation. If she stays polite to me I will be polite back. If she criticises my parenting I give it back to her.
She once said "I know I made mistakes and I am trying to teach you so that you don't make the same mistakes." I replied "I had to live through your mistakes, trust me, I won't be making them. You have absolutely NO right to tell me how to be a good parent when you did such a miserable job of it yourself". She actually shed a tear at that, but stopped when she saw it had no visible effect on me.
Some days I think I'm crazy coming back here to live, but we are managing to reconnect and she is learning to no longer make personal criticisms. Maybe she's becoming a better person? I hope so. She has little access to my boys and her English is failing now with old age and I never taught them her native tongue. But when she does see them she is loving to them. She is with all of her grandchildren, though. I think it's the parental responsibility that drives her bad behaviour.
I think the worst thing of it is the loneliness. I don't really trust my siblings as some do their behaviour is similar to hers, particularly towards me, being the youngest apparently means I have to be taught and corrected even though I'm in my 50s, and they bitterly complain about her behaviour towards themselves. How can they not see when they copy it?!