Who is Massumeh from Daughter of Persia: A Woman's Journey from Her Father's Harem Through the Islamic Revolution and what is their importance?

Satti's mother was the third of her father's 8 wives, married at the age of 12 to a man in his mid-fifties, her father's employer. She was called Khanom or Lady by everyone in the family, as a sign of respect. Later, Satti's students called her by the same title. Despite her husband's lofty status and the family's many servants, Khanom spent the days in unending toil cooking, cleaning, sewing clothes for herself, the children, servants and her husband, and preserving food for winter. Shortly after her marriage, Massumeh's mother died. Her father put two younger sisters, just 6 and 9, in Khanom's care. She soon found herself pregnant,with no adult woman around to advise her what to expect. Finally Shazdeh's first wife Ezzatdoleh took pity on the girl and allowed her to move into the family home temporarily. Returning from a year-long military assignment, Shazdeh brought Massumeh a gift of yet another wife, just a year or two older. Massumeh and Batul quickly became best friends.