Because this person was a minor at the time, the legal recourse would have been fairly minimal. Worst case, perhaps some time in juvenile detention, but more likely court ordered counseling or something of the like.

I'm not sure what could be done now. It would depend on the statute of limitations where you live first of all. Again, because she was a minor at the time, I don't believe the consequences would be those for an adult offender but I could be wrong about that.

Are you in therapy? If not, that is probably where you need to start. It takes time to work through abuse and the help of a qualified therapist is vital.