Even with the gates coming down that ---smurfette--- still won't get away from the car.
I'd put high odds on the cop, at that point, wanting to push her back into it. I mean, if an adult is that stupid, that they can't understand "walk away from the moving train", they deserve it.
She endangered that cop as well as everyone on the train. What if he had to pull her out? They had 17 seconds left. What if the train had derailed on impact?
That should be prosecuted, IMO. Massive negligence.