I just remembered a few other things about Bill and Janet McReynolds. When Bill was interviewed outside his cabin, shortly after JonBenet's death, he told the press he was going in to watch "Miracle on 34th Street", which he said was his favorite movie. Maybe the significance was because Kris Kringle (Santa Claus) in the movie was suffered from schizophrenia.

Also, in regard to the kidnapping of their daughter Jill and her friend, at which time her friend was molested while Jill was left to watch the molestation, Janet said when the abductor released the girls, he told them, "the Devil made me do it." This sounds like something a person in psychosis would say.

I really am beginning to think schizophrenia is the key to the note and strangulation.