Would you say that Mrs. Peters view of right and wrong changes throughout the course of the play? 

A relative newcomer to the town who never knew Mrs. Wright before John Wright married her, Mrs. Peters is "a slight, wiry woman" with a "thin, nervous face." She is married to the sheriff and prefers to follow the law, often apologizing for the behavior of the men because they are only doing her duty. By the end of the play, Mrs. Peters has an epiphany: something she might have already known deep within her. She protects Minnie because understands the loneliness and the world of the female domestic.