In many movies of this type—those psycho, sexual thrillers—female characters often exist solely to be damsels in distress, appear nude, or meet a violent end. This movie initially suggests it’s heading down that familiar path: a man plotting to kill a prostitute. However, the film avoids those predictable tropes. Mia Wasikowska's character distinguishes herself by refusing to conform; she isn't helpless, nor is she e…