Complex sentence: Glinda travels to Elphaba's castle to warn her of the trouble and persuade her to let Dorothy go, but although Elphaba refuses, the two women forgive each other for all grievances, acknowledging they have both made mistakes.
Split into simpler sentences: Glinda travels to Elphaba's castle to warn her of the trouble and persuade her to let Dorothy go. Although Elphaba refuses, the two women forgive each other for all grievances, acknowledging they have both made mistakes.