Complex sentence: Once reunited the family lived in Paris for two years and then in 1965, the family moved to Rome where she received a thorough education from Elementary through High School in the private Catholic Institution of the Nevers Sisters.
Split into simpler sentences: Once reunited the family lived in Paris for two years. In 1965 the family moved to Rome where she received a thorough education from Elementary to High School in the private Catholic Institution of the Nevers Sisters.