How did Sibyl Vane die in The Picture of Dorian Gray?

Sibyl Vane died by suicide in "The Picture of Dorian Gray" after experiencing a profound heartbreak. When Dorian Gray, her lover, rejects her following her disappointing performance in a play, she feels her life has lost meaning. Overwhelmed by despair, she takes poison, believing that without Dorian's love, she cannot continue living. Her tragic death serves as a turning point for Dorian, prompting him to confront the consequences of his actions.