As far as I can tell, the only variable set with the Aiden's Blackmail choice is
Code:
$ day16_Sophia_accepted_Aidens_deal = True
-or-
$ day16_Sophia_accepted_Aidens_deal = False
Refusing, among other things, triggers sending Dylan to boarding school, doesn't get you out of the Bennet date, recruits Patricia's advice on what to do about Aiden and his Uncle (or is it Aalyssa? There's a branch I'm not going to bother tracking down). (so does exiting out of the deal later as far as I can tell)
So I'm not sure (though I'm not going to spend any more time digging into it) how that leads to "
Lesbian Path". Maybe it's further down the line but I don't see much more than what I listed the in script3 or script4 files.