Thirsty, I am so happy to hear about your daughter and her friend. It is wonderful that they are recovering as good as they are.
When I was 17 something like this happened to me. It was not my car but I was the passenger and one of my best friends ended up in a wheel chair for life. Even now when I think of it I wonder if I could have done more or been more observant somehow.
I only pray that your daughter and friend not only recover physically, but emotionally also, I know it has to be hard on them.