You will be leading seminars soon. You have come so far and are now coming across as feeling strong and focused on you and your boys.
I think that is an amazing discovery you have made about seeking abusive relationships. By recognizing that, you can break the cycle. That will be good for you and your sons. There must be a wealth to learn from that, too.
As for your new friendship, just keep doing what you are doing, moving forward with your eyes open and focused on you and your boys. I am happy for you that you find that she lets you be and does not try to step in and rescue you. I imagine she can sense you do not want to change her and she must appreciate that.
Glad to hear your voice so strong and determined. V.