When mom sends the children up to bed, Franklin runs off ahead of Zoe with "Uncle Monkey" and leaves the helmet on the sofa, but when mom tells the children to leave the toys, Franklin now has the helmet in his hands.
The pickup truck drives off the road, but later is is shown facing the road.
Rose is not yet at the top of the ladder, but in the next shot she is, and pushes the children back, away from the window.
The Christmas tree falls toward Hannah's left, away from her, but in the next angle it lands directly on her.
As Alicia uses the ax to free Hannah from the Christmas tree lights, it would have made since to first unplug the lights so as not to be electrocuted.