Kalama, thank you for sharing your design wall musings!
Regarding Bonnie, I think it is simply that she doesn't want any tidbit of info about the mystery appearing anywhere in the universe other than her blog. She wants to be the one and only source on her mystery. I can't really fault her for that, it is her creation. However, when she first made it plain that was her goal, I thought, 'Good luck with that.' I think it's pretty remarkable that she's been able to maintain control to the extent she has, given the nature of the internet.