Because it never made sense to me, you know? Your mother, Luke, I know they faced the dark side of the force. I know they were tempted by it but it was never ever present. With you, I don't know. With you it always worried Luke, and your mother and me - because you're my kid.
But that wasn't -- Vader was never present like that for Leia -- And whatever surrounded you -- I think it had an impact on other force users. I think that might have been why Luke treated you different or why your mother didn't always know how to talk to you. It wasn't you -- it was whatever it was.