If Luke has absolutley no recollection of his mother even though he was first born,named and held by his mother , and stronger in the force than Leia, how does Leia have memories of her? I don't want to make excuses because I think George seriously dropped the ball on this one, but isn't it more likely that Leia's recollections of her mother are of Bail's wife, (ASIDE FROM THE ANNOTATED SCREENPLAY)

Bail and his wife raised her from birth as their own, because they couldn't have children, this could explain her adopted 'mother's sadness at not being able to conceive a child of her own, concealing Leia's identity from her true father and the Emperor, whilst still retaining a position in the Senate would be hard enough without letting Leia know she was adopted, as far as I know Leia was unaware that Bail Organa was not her natural father.