Complex sentence: Jeanne Phillips is the daughter of Pauline Esther Friedman Phillips, who now writes the Dear Abby column under the pen name Abigail Van Buren, which was also used by her mother.
Split into simpler sentences: Jeanne Phillips is the daughter of Pauline Esther Friedman Phillips. She now writes the Dear Abby column under the pen name Abigail Van Buren, which was also used by her mother.