Following recent attention to the psychoanalyst Karin Stephen?s account of the child?s consent to, and rebellion against adult rules, this paper tells her story. It focuses on the psychological factors in both Karin and in her relationship with her mother which contributed to her becoming a psychoanalyst. This leads into details about the mixture of consent and rebellion in Karin herself, specifically her initial consent to, and subsequent rebellion against Ernest Jones, as president of the British Psycho-Analytical Society, and against the society?s rules before and during the second world war. To this is added her rebellion in the mid-1940s against, or at least her critique of, Freud?s account of the super-ego and her emphasis on it being subject to the reality-testing function of the ego. In telling this story the author draws on published material as well as on previously unpublished fragments from Karin?s diary and from letters to her family, particularly her mother, Mary Berenson.