I'm really sorry for whatever you went through. The T's behavior and communication and boundary crossings/breakings are always their responsibility. Her ethics complaint will either rise or fall on her, it is not on you. Even if you threw yourself naked at her (in a forest), it's her job to act professionally and focus on your therapy no matter what. No matter what you do, her professional response is up to her. If she's not professional or ethical, she can and should be held responsible for her actions.

Your behavior here is not the problem, back in high school or now. I hope you will find your peace with it. It's not about you. Exploitation is exploitation, and those who are looking to take advantage of the vulnerable ones under their care often target those who have been exploited before.