Sheila Birling is the character that changes the most in J.B. Priestley’s play 'An Inspector Calls'. She is introduced as a childish young woman that is treated like an inoffensive girl, which is absent-minded about everything that is going on in her relationship with Gerald and in the unjust and partly cruel society she lives in. She changes completely when the Inspector arrives and reveals to them the dramatic and unpleasant death of Eva Smith. She figures out before any of the other characters do, what the Inspector is and realizes why he is there. She sees the connections in society that the Inspector starts to explain to the Billings and Gerald earlier than any of them. Sheila changes her behaviour towards Gerald when he confesses to everything. By the end of the play she has full knowledge of how unjust society is with working class people and everything that happened in the false relationship she had with Gerald. J.B. Priestley uses the character of Sheila as a vehicle for ideas. He uses Sheila to explain that the generation of young people could be the start of changing society in a more desirable way.
Sheila is introduced as a woman that is treated like a little girl which has been protected by her parents not wanting her to know how unfair life can be making her unaware of everything bad that is going on around her. 'Mrs Birling: It would be much better if Sheila didn't listen to this story at all'. This shows that all things that are going to unveil something pitiless about her social class is being hidden from her as to most of the girls at that time. 'Birling [angrily]: Why the devil do you want to go upsetting the child like that? '. She is being talked of like a kid as if she were delicate and cannot be disappointed because if not she can break. Summing-up she is being hidden the truth so that she does not take notice of the cruel things that are being done to