Continuity mistake: Naomi Watts' dark roots change length throughout the movie.
Continuity mistake: When the woman is watching the film and trying to see the lighttower, she has blood in her nostrill even though she has not yet started to bleed.
Continuity mistake: In the scene where Rachel approaches the horse and the horse starts going crazy, you can see the ring at the end of the rope securing the horse break away from the trailor. In the next sequence when the horse is running around on the barge, the rope is broken with no ring.
Continuity mistake: When Noah is at the supermarket buying cigarettes, he pulls out of his pocket a bunch of junk such as coins, trash, and an old pack of cigarettes and dumps it on the counter. In the next shot of the counter, all the junk is gone except for a coin, and the old pack of cigarettes.
Chosen answer: She says "Daddy loves the horses...but he doesn't know" meaning she knows what's about to happen to all his horses. (Because she makes them commit suicide).