hi purple, my daughter was in a horrible crash a few years ago with 2 of her friends. Each of them got back into driving at different speeds. But they all had to get back on the road (even though it was very very difficult for them) and drive in order to be not so obsessed with crashing. Thats really all the advice i can give you. im sorry this happened to you and many people have the reaction that you are having.
Also, i have did and ptsd. it seems like inorder to have did you'd almost have to have ptsd.