Yes, exactly!<br/><br/>Note that what happens after is not yet determined--do the two decide 'screw this, we didn't know, no blood no foul'?  Do they recoil in revulsion?  Do they decide that the rules to not apply and decide to keep it up?  Perhaps they take out their rage and disgust on the scenario Big Bad, but one or the other is tragically distracted and dies while inadvertently saving her sister/lover.<br/><br/>Lollipop, do we want our two to be twins raised apart?  Or half-sisters?<br/><br/>(ooooo!  Or even unrelated, but someone convinces that they're sisters the morning after, thus driving one or the other into a Big Bad eviscerating frenzy, only to have it come out later that the whole thing was a lie...damn, I've got to quit reading Hammett before bedtime!)