If it makes you feel any better, I'd imagine that whatever happened would have happened prior to him leaving to pick up. If she was promptly there at 2:30, she must have had some advanced notice.

That is very tragic though, always feel for the families in this circumstance. There really isn't much you can do, other than what torontokids suggested. Tell them you're there if they need you, but don't expect too prompt a response.