So I've been following Mandymod and Dragnacarta with their guides. Both of them however make it seem that once Izek sees Ireena or the PC who is his long lost sibling he immediately treats them like family. I have found no guides on how Izek is to realize Ireena is his sister.

Currently I have played it that when Izek meets the party and Ireena he is initially dumbfounded. Here is the woman he has been dreaming of, and has been obsessing over for years. He does not know this woman and yet she haunts his dreams. He stumbles over his words while looking at her, and the party has decided he has a crush on her.

My question is, how do I reveal the Izek Ireena sibling situation? Do I leave the mystery unsolved? If the Baron assigns a guard to Ireena does Izek try to insist he be one of them? If Vasili tries to woo Ireena does Izek become jealous? When the party finds his dolls, how does Izek respond?

My party has been "invited" by Vargas in order to seek help against Lady Wachter. Izek was the one to lead them there. Tomorrow we begin in the burgomasters mansion. How have you all handled this in your own games?