I am SO glad that your neice is alright!
I just hate reading about things like this. Many years ago I was in a car that hit a child. She ran out from between parked cars - I guess in an attempt to cross a busy street - and right in front of our car. I was in the passenger seat, and although we braked she still was hit hard enough that she hit the windshield right in front of me. She, miraculously, was fine. Very shaken up and I think spent 2 days in the hospital for observation, but I don't recall there being anything broken.
It was days before I could even get in any car without cringing, and even though I wasn't driving when the accident occured I was still reluctant to drive for a while after that.
It's amazing how these things stay with you.
P & PD for your neice (and you!)