Unfortunately, this chapter's file became corrupted during writing. It was a bit to extensive to rewrite so I figured I'd give a brief summary of what happened instead.
Matt, Amy, Alyssa, and Haley walked through the woods in search of their friends. The group recalls the events of the escape and remembers those that were lost during which. They eventually stumble across a state park to which waits Jacob, Ashley, Brad, and Tanner. They discuss a plan and decide they need to find Lucas and Mike, the brothers who haven't been seen for some time. Matt volunteers to go along with Brad and the two of them head off to find them. That's where chapter 13 picks up.