While characters hide in a neighbouring house, about 45-50 minutes in, they hear others on the roof. Those same others are then seen running through the woods before actually being seen on the roof.
Michelle draws a 'Circle of Protection' on the floor and sits inside it, leaning back against a wall. She then lies on the ground and it is clear there is no wall anywhere near close enough for her to lean on (which would have breached the circle anyway).