Oh thanks man. I've done so one or two months ago (in-game) so I just gotta wait and get lucky.
Regarding Scented Message 2, a fairly recent
reddit post says Nuclear-Powered Lasers research triggers it. To get there Siberia Base must be completed for one particular loot item. If that's true then I've yet to discover the Bloom-Nuclear Lasers connection. So far I've researched nearly 95% pre-School Graduation stuff and I'm kinda setting up opening the Pandora's Box.
UPDATE 1Just got Scented Message 2. It wasn't Laser related as suspected. I now think it's triggered by completing EuroSyndicate mission to kill a bunch of mutants (costed me negative 2000 infamy, son of a...). Soon after that (same month, few days after) I got the message. Seems like a logical conclusion considering what else SM2 unlocks, by looking at tech tree. Also seems wise to be prepared to quickly rush Zero Tolerance to Zero Tolerance and beyond, to stop such infamy punishing missions appearing in the future (only a guess at this point).
UPDATE 2Found Captive Maiden too (along with several other captive types, incl. Castaway Gal) on a !Demonic Sacrifices! mission, but this one was in a desert area unlike all those before in underground caves. Despite starting the mission in day with Sun high above, it was considered night for some reason. Lots of Boogeymen and Disciples/Sadists of Apocalypse. Sadist was a 1st timer for me as well, despite just starting my 3rd in-game year.