I think Clague's (the bus driver's) position is a lot worse than some people seem to think on here, based on some of the facts from the Ames Tribune's story today:
The facts alleged by the Story County attorney indicate a knowledge of the accident. I can see Clague striking Ms. Jacobs and not knowing what occurred right away, but I do not think it likely at all that he went on for weeks without the thought crossing his mind that he might have been the driver who struck her.
While I can perhaps understand his position in that moment - as a person, you wouldn't want to admit to anyone that you're responsible for a death, especially if there's a part of your brain desperately saying "Maybe it wasn't me" - the alleged facts would pretty easily prove guilt if it did come to a trial, I would imagine, and any sympathy that I might feel for a person who made a small mistake with such enormous consequences is washed away by his selfish and cowardly actions that prevented the victim's family from gaining closure.