It's possible that she may have turned somewhat in using whatever leverage (I'm thinking Lindsey's lap or legs) she used to jump. That's assuming her head was face down when she started out the window. Or she may have been face up - using the roof of the car to pull herself out. It definitely sounds like she initially landed on the back of her head. IIRC, the truck driver and his passenger said she rolled quite a lot. This tells me that our pal Alonzo was NOT slowing down to let her out of the car. I've never seen anything that said they were going slower than 75 miles an hour when she went out of that window. Not only does that show no indication of slowing down, but that he was actually speeding. And in 1999, 75 mph would most likely have been 20 mph over the limit. I can totally believe he hit her - maybe that's what frightened her enough to jump. She knew she was in danger inside that car.