Sheila Birling's Character Development

At the beginning of the play, Sheila is described as a "pretty girl, in nearly twenties, very pleased with life and rather excited." Despite being engaged to Eric, she shows early signs of perceptiveness, questioning his absence "all last summer." She quickly notices Gerald's discomfort when Eva Smith is mentioned, remarking "you gave yourself away as soon as he mentioned the other name."

Sheila demonstrates remarkable growth as the play progresses. She's the first character to accept responsibility for her role in Eva's downfall, openly admitting jealousy was her motive: "And it just suited me." Unlike her parents, she understands the Inspector's purpose and responds to his investigation with genuine remorse and self-reflection.

Key insight: Sheila's transformation represents Priestley's ideal response to social responsibility - acknowledging wrongdoing, showing genuine remorse, and committing to change.

As the play continues, Sheila becomes increasingly critical of her family's attitudes. She confronts her parents directly, stating "you don't seem to learn anything" and emphasizes that "you and I aren't the same people who sat down to dinner." Her empathy develops significantly as she recognizes that "these girls aren't cheap labour - they're people," showing her new understanding of social inequality.

By the end of the play, Sheila essentially embodies the Inspector's moral perspective. She maintains her newfound social conscience even after learning the Inspector might be a fraud, demonstrating that her transformation is genuine and permanent, not merely a reaction to authority.