A summary of the change in Sheila's character

in the beginning of the play, sheila is shown as an arrogant little girl, she has her hurband and a perfect life, she's goanna live rich, but through the play, sheila becomes the most sympathic characters, she feels remorse and wants to do something. She's part of the young generation with Eir, coth of them want to be active opposing the old generation (mr and mrs birling)