″[Katsa] practiced every day. She learned her own speed and her own explosive force. She learned the angle, position, and intensity of a killing blow versus a maiming blow. She learned how to disarm a man and how to break his leg. She learned to fight with a sword and with knives and daggers. She was so fast and focused, so creative, she could find a way to beat a man senseless with both arms tied to her sides.”