* Sheila's social position: Sheila is from a wealthy, upper-class family and doesn't fully understand the struggles of working-class people like Eva Smith. She believes Eva is being "unreasonable" and "disrespectful" in asking for more money.
* Sheila's vanity and insecurity: Sheila is initially motivated by vanity and a desire to be seen as "above" the working class. She wants to maintain her social standing and feels threatened by Eva's assertiveness.
* Sheila's ignorance and lack of empathy: Sheila lacks true understanding of the hardship and desperation Eva faces. She dismisses Eva's concerns as "nonsense" and doesn't consider the impact her actions have on Eva's life.
Sheila's actions ultimately contribute to Eva's downfall, and she is deeply affected by the realization of her role in the tragedy. This transformation marks a significant turning point in the play, as she begins to understand her social responsibility and the impact of her actions on others.