#7: Definitely Going to Steer Clear of Here
This raises a lot of red flags. The OP’s mother was definitely smart for not letting her child go over there; I would be concerned for their safety. I feel bad for the children in this household; they don’t deserve this kind of parent.
Situations like this are just saddening and make you wonder what even the parents were thinking when they had kids. If they dislike them so much, why bother to have them in the first place? Sad, sad circumstances.