That sucks, dude. Glad she's okay, though. Since she doesn't remember much, did she hit her head on the wheel, and lose concsiousness? Head injuries are nothing to mess around with. If she did, you definitely need to keep a close eye on her, in every aspect. They might not see anything wrong now, but it might take a while for symptoms to show. A guy I used to work with got in a wreck, and had a head injury. He was never quite the same after that. Not saying that this will happen, but since I'm talking about him, he went missing a couple weeks later. They found his body near a river. It looked like suicide, but I don't have all the details on it. I'm totally not trying to freak you out, I'm just saying, IF she hit her head, keep a close eye out for her.
