Whoa , just one question : have you ever read The Forest of Hand and Teeth ? It's an amazing book , and this sounds sooo much like it ! Not that that's a bad thing ! But yeahh , it really does !
This is a great idea. Usually I'm not one for science fiction but I love your writing style. Maybe you should try naming it "Survive", "Survival, "Alive", or anything really because leaving it untitled isn't really doing it for me. Really like this so far, can't wait to see where it goes ♥♥