[Source] Derae is a secondary character in The Witcher 2: Assassins of Kings. She is one of most requested elves working at the Flotsam brothel. You can find her in one of the rooms on the top floor of the same building where both the inn and the brothel are. Spoiler warning: Significant plot details follow. Derae is Margot's partner. Unfortunately, if you chose to give the sword to Iorveth at the Elven ruins, during The Assassins of Kings quest, her beauty will not save her from being a victim of the incidents of Chapter I.