Complex sentence: Feride is the orphaned daughter of an army officer, and as a teenager attends Lycee Notre Dame de Sion in the winter, and stays with one of her late mother's sisters during the summer holidays.
Split into simpler sentences: Feride is the orphaned daughter of an army officer. As a teenager, she attends Lycee Notre Dame de Sion in the winter, and stays with one of her late mother's sisters during the summer holidays.