Wow, sorry to hear that but glad she is ok. It always sucks when it's a one car thing, cause there's usually nothing to blame it on. LOL
Just kidding. I once hydroplaned after it rained one day. I was only going like 35 but coming to a turn, and when I slowed down and turned, my car slid straight and I bumped against the curb hard enough that it bent the frame of the car. Had to put the donut on just to be able to turn left and get it home. No other damage to it though.
Get your girlfriend some Icy Hot, that stuff is good and might help her neck.