Nicole is described often as a sociopathic girl who feels no sympathy for anything. She cares little about things such as school, she does drugs, she traumatizes people either to get out of something or just because she enjoys the power trip, she seems desensitized to things such as being shot, and more. But she is also seen at least having a sense of a moral code, even if it excludes some things it could probably benefit from including, as she is seen hating pedophiles.