If "ey needs to figure out how to be friends with her" AND "there is evidently a significant level of impotent sexual interest involved that is already creating relationship drama" AND "she is an accountant" THEN odds are there are other people who would make better friends than her.

Huh? The conjunction fallacy doesn't apply to the right of the pipe -- whereas P(AB|C) cannot possibly be greater than P(A|C), P(C|DE) can be less than, equal to, or greater than P(C|D). Am I missing something?

(In this particular example, I'd guess (with low confidence) that for A=“there are other people who would make better friends than her”, B=“ey needs to figure out how to be friends with her”, C=“there is evidently a significant level of impotent sexual interest involved that is already creating relationship drama”, and D=“she is an accountant”, P(A|BCD) is slightly but not terribly lower than P(A|BC), by a reasoning that would be politically incorrect to fully explain but involves, among other things, looking at where “Accounting occs” are on this chart and wild-ass extrapolation from my personal experiences. :-))