Simplify the following text for a Grade 6 native English-speaking person.
Original: Her mother was Lillian Bostwick Phipps , an heir to the Standard Oil fortune , and father was Robert V. McKim ; Lillian divorced Robert and married Ogden Phipps in 1937 .
Simplified: Her mother , Lillian , was an heir to the Standard Oil fortune . Lillian divorced Robert and married Ogden Phipps in 1937 .