I pray that the Lord be with that young man to continue to help him and give him grace during this horrible time in his life. He is going to have a hard time, but he is looking in the right direction. For his sake, I'll offer my hope that the same grace comes to her.
My youngest daughter died in a car crash several years ago. It was a single-car accident, and a friend of hers was driving. I made sure to tell the young lady at the funeral that I certainly wasn't attaching guilt to her, because it was just an accident. The circumstances led me to the belief that the accident was mostly caused by inexperience, and know that it was as much a tragedy to her as it was to us.
The Lord gives you strength when you need it most.
My pleasure.