http://www.hollywoodreporter.com/news/marion-cotillard-dark-knight-rises-rust-bone-321515?page=2
All she'll confirm is that, contrary to some fans' belief, she does not play Talia, the vengeful daughter of Liam Neeson's character, Ra's Al Ghul (who also appeared in Batman Begins), and that she takes the role of Miranda Tate, an ecologically minded businesswoman who "is fascinated by Wayne Enterprises. They go through difficulties, and she wants to help provide the world clean energies. She's a good guy." But does she stay that way? "Yes," she insists.