Wrongo!! She was spaekin of Bail Organa's wife, the lady u saw him land and give him the child. That is the lady she is refering to. she does not know who luke is refering to because she does not know yet they are related and that he is her brother. So, he knows of his Aunt, but Luke is questioning her parents who brought her up in hopes that she was brought up by their real mother Padme. But she does not know anything more than Mrs Bail organa. her name is Princess Lea organa! she only knows the sadness of THAT women, a sadness that I enterpret to be Mrs Bail Organas knowledge of Padme's death and the rise of the Empire. That is her mothers sadness. luke asked in hopes she would describe their real mother, and in hope that perhaps Lea would say she was stil alive! Hopes Padme would be alive!