Did DU Drow know Orin was Sarevok's daughter, or was he also mislead to believe her his like.... Half sister instead of double niece. Bhaal cult family is fascinating.
God what the hell even are Bhaalist family conventions, LOL.
No, he wasn't. And how much it would have troubled him depends on how long he's been a bhaalist for. It's actually interesting to me how Orin seems betrayed at the revelation, considering everything else that the Bhaalists get up to - Is she upset because of the incest? Because of the implication of generational sexual abuse? Because she ends up deducing that she was originally supposed to be a sacrifice to Bhaal herself? I have to assume that the lie itself is what upset her, since she must have been under the pretense that Bhaal impregnated her mother, somehow - but we don't actually have confirmation either way. That whole line of dialogue feels a little bit incomplete to me, so we can only theorize from there.
It's worth pointing out that DU drow himself was not brought up with the same inhibitions as your average person - he is aware of what is taboo and what isn't, but he understands that Bhaal's law does not abide by social conventions, and Sarevok would have sold himself as Bhaal's mouth-piece for a long time. If Sarevok set out to convince DU drow that what he did to Helena was necessary, then he would have probably accepted it. Still, DU drow had a lot of empathy for Orin for the majority of their time together: If that revelation crushed her as much as we see it do in-game, he would mirrored her indignation up until a point - that point being before his rivalry with Sarevok had grown into a type of bro-ish respect.
I think he would have always been furious at Sarevok for lying, but there would have been periods where he would have dismissed Orin's feelings as an overreaction more than others - seeing that, right prior to being disposed of, the only feeling he cared about coming from her was affection/anything he could interpret as responsive to his advances. Anything else - anger, disappointment, sadness - would have been a source of quiet irritation.












