Nice to meet you
Ah that really sucks. Must have made a big impact on you.
Some time ago I heard positive things about a treatment that can help people who have SA caused by a traumatic event. It is called EMDR, short for Eye Movement Desensitization and Reprocessing. Have you allready tried that? I think it helps you dealing with traumatic experiences in the past and give it a place. It doesnt help me because my SA wasnt caused by a traumatic event (I think) but maybe it can help you.