Mary is immature. She plays the game right along with the other girls. She gets caught up play acting just like the other girls. Mary is also motivated by the attention she gets in court. She tells the Proctors that she must appear in court. She does this in a matter-of-fact tone of voice. She is not requesting permission. She is stating the fact. When John Proctor forbids her attend court, she rebels and states that she is going:
She occasionally dares to defy Proctor, particularly in her insistence that she must attend the hearings.
Mary can be stubborn and rebellious. She seems to be in awe of Abigail. Therefore, she tries to please her by play acting. She is motivated by the attention she gets in court. She enjoys play acting. Also, she is afraid to admit she has been play acting. She fears what the court will do to her for lying. She is responsible for sending people to their deaths. This is a serious action. Still, she continues her play acting and becomes hysterical in court:
She becomes hysterical before the court, however, and soon joins Abigail in pretending that there is evil witchcraft at work. Her behavior in the court contributes, in part, to John Proctor's arrest.
Deep in her heart, Mary knows she is doing wrong, but she has pretended too long. She can't make right her actions for fear of the courts and fear of Abigail. She also thoroughly enjoys being the center of attention:
Mary Warren is the Proctors' servant who seems timid and subservient but who finds a powerful role in a kind of people's jury in the courtroom.