.Mac. said:
At this point, I think we'd be surprised if Han reveals to Kira that she is actually *not* his and Leia's daughter.
"Kid, there's no easier way to put this but, we are not your biological parents. We adopted you. Your mum and I tried and tried.. it wasn't meant to be."
"What?! Why are you just now telling me this, after all these years?"
"Well [Thinks for a moment] it felt like the proper Star Wars thing to do."
^ Well done, good sir! :D