The biggest question to me is who left the DNA found under JonBenet's fingernails that was not consistent with anyone in the home, not the father, mother or brother.
Soooooo, the two page letter didn't alarm you??? They went out that night either to dinner or a party...she could have gotten the DNA then.
The child spent the entire evening at a Christmas party in the neighborhood. No doubt she came into contact with dozens of people at that party. No doubt she sat on the lap of many adults at the party. It is logical that unless she had been bathed and soaked in a tub for a long time, that all kinds of matter would have been under her fingernails.