Like Nameless, Nameless’ sister is a child god with unfathomable power in The Magicians. While she has slightly more mental capacity than her brother, she still is extremely immature in her way of thinking. She gets angry and decides to lash out at the people who make her angry. There’s no deeper level of thought that would change this from a basic reaction to revenge. Considering this and her childlike state, she can’t be held to the same standard as other gods. She isn’t well-behaved.