During entry into the imperial senate senators give blood for emergency medical attention (and of many secret checks). Leia Organa is the youngest senator of the empire,so she gives her blood too. Because of some test it appears that she is a daughter of Vader. THE TALK with Palpatine where Palpatine tries to find out whether the presence of Leia somehow cunning plan Vader, the result of long-standing or recent affair (but how?) By the choice of the author. THE TALK occurs when Leia and Bail Organa is presences
1 Vader knows that he had no children at all
2 Leah so done with it
3 Bale tries to portray himself surpaised but couldnt stop laugh