Sheila Birling is a character from the play "An Inspector Calls" by J.B. Priestley. She is the daughter of Arthur Birling and Sybil Birling and is engaged to Gerald Croft. Sheila is portrayed as a young woman who initially embodies the privileged attitudes of her social class but undergoes significant personal growth throughout the play. As the story unfolds, Sheila becomes increasingly aware of her family's moral failings and the impact of their actions on others, particularly Eva Smith. Her character represents the potential for change and social responsibility, highlighting the themes of class and accountability in the play.