Personally I would have assumed Gilligan would be more the one on the Hemp train especially since he was Maynard G. Krebs before his was the Skipper's little buddy.
Maybe she was making grass brownies for him and Bingo, Bango, Bongo & Irving of the Mosquitoes when they showed up.
The bigger question though from the AP article is who knew Mary Ann was 6' 5"? That would make Ginger - who was taller - an Amazon.Oh wait a minutes it says 'centimeters' so that's 5'5"... whew! I guess the Idaho cops use the metric system. 6'5" would have blown my childhood crush more than the Ganja.