The policeman will cover her up. And she will realize it was her childhood friend. He will hide her and tell her to keep quiet, he will create a distraction to divert the pursuers' attention. He will go out of the bogie, and tell the others she's not on this side. And run with them to the opposite side. Eve can stay on the train when it travels and escape that place.
Done with the four steps.
Thanx for the guess.. keep your fingers crossed and wait for the next episode... :)