I also have a fantasy that somebody would have intervened and talked to me as though I had rights and was a person. My mom's therapist supposedly recommended family therapy or individual therapy for us kids back then, but it never happened. I'm not sure why. Maybe it was the $$$....although, if my therapist recommended therapy for my child, it would happen no matter what!
I know after I left for college, my mom took my sister for a few sessions at one point but it was crisis-oriented....and one of my brothers also went years later, but that was also because it got so bad they couldn't ignore it. A try at prevention would've been nice

I was the older, responsible, nothing-is-ever-wrong-with-her child, so my crisis never erupted in their eyes and no help for me.