Congradulations on doing a good deed! There are too many people in this country whom would not have helped for fear of possibly being sued, it's a sad world we live in when things like that happen.
While it was under different circumstances I have watched people die (albeit slower) and it sticks with you for a long time, I still have never totally recoverd that that was 7 years ago, good luck with your counseling, and as you can see we are here for support!
-Pete