Sounds like you are crystal clear. Hugs to you. It is never easy to really say what we need. I know that to me it feels like I'm choking to death trying to get the words out.
The thing is that when you get to the place that you need to say what you have to say for your own sense of integrity then you will. It is good to understand what happened years ago but it is best the focus on the here and now and going forward. You are a very courageous lady.