I get that she had no childhood and was manipulated into being literally a dog for the emperor, but it doesn't fully justify her killing thousands of people. How did she for surviving so long without realizing that she should have stopped? There were maids she had and other people she encountered that were at least ethical in some way. Her sense of survival is strong, damn. Literally became a robot to survive a sad life, she wasn't even happy at any point of her life.