Camilla Salander is the estranged twin sister of Lisbeth Salander. She's hasn't been seen since their seventeenth birthday, and she and Salander don't get along. Apparently, she's very beautiful, and also something of a daddy's girl. Zala speaks of her with something like tenderness. Overall, she seems to be the complete opposite of her sister Lisbeth.
They are both the daughters of Agneta Sofia Salander.
Alexander Zalachenko: Father
Agneta Sofia Salander: Mother
Lisbeth Salander: Twin-sister
Ronald Nieddermann: Half-brother