Luke specifically asks about her real mother. If you believe she's confusing her with her adoptive mother, then you've sucked all the emotion out of that scene.
"Everyone got excited at the end though. When Grand Moff Tarken was on screen, the entire theater started whispering and you heard eveyrone almost at the same time go "whoa, it's Tarken!"
Damn! I missed him! Time to go back and look.
