I'm currently going through a similar situation. My mother has never known what boundaries mean. In India, that's not a thing. Privacy doesn't exist either. Her actions of siding with my abusive and manipulative father has slowly made her act in the same way, which in turn ruined what littkle relationship we had. Even though we share a roof (because I can't move out yet), we hardly talk or look at each other.
All she cares is about my brother's well being. She's made poor life choices and is in a miserable mental space, blaming me for being strong willed. Everything seems to be my fault.
After reading this, I kinda feel normal. Thank you so much!