Complex sentence: Though her peers settled for being apprentice to Ordinary Wizards, Marcia made sure that she became the Apprentice to the then ExtraOrdinary Wizard, Alther Mella.
Split into simpler sentences: Though her peers settled for being Apprentice to Ordinary Wizards, not Marcia. She made sure that she became the Apprentice to the then ExtraOrdinary Wizard, Alther Mella.