Other mistake: Everytime it shows a window it is morning, even if the scene is supposed to be at night.
Other mistake: Right after the two girls have been taken in by Lucas and Annabelle, there is a scene where the girls are asleep. Lucas turns off a lamp and Annabelle turns off the overhead light switch; the room goes to complete darkness. However, when the camera pans back to the bed, there are two lamps/nightlights on in the room which would've provided light in the room even after Lucas and Annabelle turned off their lights.