Much stronger boys in her class soon learned that it could be quite unpleasant to fight with that skinny girl. Unlike other girls in the class, she never backed down, and she would not for a second hesitate to use her fists or any weapon at hand to protect herself. She went around with the attitude that she would rather be beaten to death than take any shit.
"Superheroes live in a world of good and evil, and she’s far more complex than a superhero. She’s been compromised. She’s been subjugated. She’s been marginalized. She’s been swept into the gutter and she’s had a part of it. She dresses like trash because she’s somebody who has been betrayed and hurt so badly, by forces beyond her control, that she’s just decided to be refuse."
“I’ve had many enemies over the years. If there’s one thing I’ve learned, it’s never engage in a fight you’re sure to lose. On the other hand, never let anyone who has insulted you get away with it. Bide your time and strike back when you’re in a position of strength—even if you no longer need to strike back.”
We wanted to shoot the scene where she’s plotting her revenge of Bjurman and I wanted the idea that her world literally gets turned upside down. And I like the idea of taking a techno dolly and just flying over the top of her head and seeing her face as you see her eyes darting around as she is lost in vindictive fantasy. - David Fincher (TGWTDT audio commentary)