Yes, the bus driver was wrong but he is going to have to live with the guilt of what happened the rest of his life.
I have no doubt that every time he tries to go to sleep, that accident replays itself over and over in his mind. He musty be consumed with guilt.
I do feel sorry for him as it was an honest mistake, but a very costly one that he can NEVER go back and undo.
That said, the girl should never be allowed to drive again and she should be jailed for criminally negligent homicide.
The primarily fault lies with her for not paying attention.
Based on the photos, it was a clear, sunny, dry day on a road with a very good line of sight.
No excuses at all for her not stopping.
It was dark when this occurred. Maybe she has vision issues?
It was only a few minutes after sunrise, i.e., completely dark.