I should bloody well hope so. No amount of good wishes will dilute his angst.
In a tiny tiny way, my father's experience whilst driving gives me some insight. Driving at his usual sober pace in a built-up area, a child's soap-box cart/ bogey [call it what you will] shot out of a side road, having had benefit of a long steep hill. Dad's car hit the cart. The boy was injured.
My dad visited and visited in hospital. The lad made a complete recovery.
I don't think dad did, his driving became even more careful, even apprehensive.
These experiences never go away.