Continuity mistake: The cell phone photo that David snaps does not look like the one in the photo frame. Most obvious is the gap between Gabby and Angie's heads and the reduced size of the snowman's head behind them. Even if David snaps another photo, the snowman's head is the same size and distance behind them. (00:41:58)
Continuity mistake: Gabby's head is turned to her left. She turns to her right, but she is instantly back to her head turned to her left, as if she never turned her head. (01:22:57)