I love this concept, really awesome idea!
I wish there were more gameplay concepts to explore, more things to do other than hide the child, then hide yourself. Maybe the monster should be willing to search for the child - look into the places she can hide, so you need to constantly trail the monster and distract him if he's getting too close to the child. Just more stuff to do.
But overall, it's a really great experience, with a lot of room to expand! Great work!