Indeed!...what do all the flashes mean.
I was (edited from 'am'after reading above, no child locks on passenger doors) presuming it had child locks, to explain why she(Libby I believe) did not attempt to exit the car after entering if pushed in, which I feel, going off the video clip.
If she was hit around the side of the car, she may have been disorientated still. Or she may have chosen to stay in if my perceived analysis of the video (point of entering the car) is wrong. Sadly one can only speculate....for now at the very least.