Some characters (especially female ones) behave in a way that would have shocked the society in their day. What Moliere does is show us one character that does act as society would expect (Mariane) and then shows a contrast with other female characters, such as Elmire and Dorine. Mariane is the best example of the girl of the day - sweet and obedient. The other two women are representing girls in that society who are trying to break free.
