How does the character of Sheila change in An Inspector Calls?

Sheila is the youngest child of Arthur and Sybil Birling. Initially, she is portrayed as being somewhat flighty, petulant, and spoiled. As the narrative progresses, however, she develops a degree of conscience and guilt over how she treated the unfortunate Eva Smith. Still later in the play, as she becomes more and more aware of how badly Smith was treated by virtually every one in the family, Sheila becomes increasingly assertive about how working class people like Smith should be treated, and how capitalists like her parents and Gerald should behave.