i mean, if she is supposed to save the doctor from his sin, she certainly goes out of her way to lead him into temptation. did she want to tempt him but have him reject her? she is certainly upset when he rejects her advances
Maybe her mission was to teach him a lesson, I am sure he will be thinking twice next time he is about to rub himself a stranger.
But besides this, I think she was really attracted to him, crying when rejected and masturbating after they were introduced at the pool. So I think she was not really trying to teach him a lesson, maybe she thought her mission was to be with him. A sort of naive mission for a young girl flirting with a married doctor that is also flirting with her mom.