Continuity mistake: After a day at the beach, Lucy has a long walk ahead of her via a very long dirt road. When Lucy starts the walk, there is a man/woman riding a horse-drawn wagon; but, after a brief chat with Daniel, when she starts walking again, the wagon is gone, and there are no visible side dirt roads.
Continuity mistake: At the end, Lucy is sitting in the big chair in her bedroom, and Martha leaves, pulling the door closed with her. In the next shot, the door is wide open. In addition when Lucy dies, her head is turned to her right, but as she leaves as a ghost, she looks back at herself, and her head is now turned to the left.