Complex sentence: She dated Safra for some time but the romance ended after her family, of Ashkenazi Jewish descent, did not approve of her relationship with Safra, who was of Sephardic Jewish descent.
Split into simpler sentences: She dated Safra for some time but the romance ended. Her family, who is of Ashkenazi Jewish descent, did not approve of her relationship with Safra, who was of Sephardic Jewish descent.