Part 1: The encounter

A girl is stuck in a forest when a boy comes along, cuts her free, helps her escape and brings her into a dark cave. At the end of the cave is a small orange door in which she opens and a tunnel is revealed. As she walks through, she thinks about her life state at the moment and then the horrible truth hits her. She is not with the boy, and she is the only one left in her family. A quetion slaps her hard in the face: am i next?