Leia remembering her mom/the ending of ROTS has never bothered me, because I instantly assumed she was referring to her adopted mother. I don't remember her ever suggesting that she was adopted. And some adopted kids grow old and die without ever knowing that they were adopted. Perhaps Bail and Mrs. Organa wanted to keep the seperation from her parent(s) as large as possible, to keep her away from Li'l Annie. That's how I've always seen it. And as far as luke kissing his sister, it doesn't bother me either. Leia was hot, and Luke didn't know it was his sister. And besides, there was no tongue.