Another fan here. I felt so sad for Lexy that she felt she couldn't have children because of her depressions/mood swings. By her standards I definitely shouldn't have had them! I thought that trying to coax the truth about her from the dog was a powerful metaphor for the difficulty of communicating with the mentally ill, and the wrong-headed way that people can go about it. But it was redemptive that he understands what happened in the end because of the message from her, not through the dog, nor the psychic, and that the message had been there all along.