+In canon, sacrificing herself to a life of horrors and mental torture to protect her brother. She sort of fails and ruins both their lives, but still. The sentiment and the little speech she gives is heartwarming. In game, learning to care about people outside her family circle. She actually thanked people and proved she could still act like a decent person.

-In canon, the plot to kill her stepmother. The plot has very shaky justifications that prove just how far gone she became after spending those months under a serial killer and how warped her sense of right and wrong became under stress. It's implied the woman hadn't crossed Gretel yet and she was just doing it to preserve her idea of family. And it's really quite creepy.

Gretel considers herself to be mostly good. She thinks she has this perfect set of unquestionable morals and justifies most of what she does as being for the greater good. However she fails to always follow on her on moral path and thus realizes she's no saint.