Talia al Ghul
From LEGO Batman Wiki
Talia Al Ghul is Ra's Al Ghul's daughter. Talia carries a sword and is very skilled at using it. She is in love Batman but her loyalty for her father keeps her and Batman from being together. While being a Batman villain, Talia's love for him leads her to help him when he really needs it. She is very acrobatic and skilled in close combat. Her sister, Nyssa, was apparently assassinated by Batgirl (Cassandra Cain).
In Lego Batman: the Video Game
She can be bought for 60,000 studs. She is not in any levels or Villain Hunt. She wears a white shirt and black pants. She is also very acrobatic and can use acrobat points and walk on tightropes.