She was born into a Maronite Christian family. At the age of 20 she converted to Islam in order to marry Nasser Al-Rashid, a 40-year-old businessman and adviser to King Fahd. She has five children with Nasser Al-Rashid. After eighteen years of marriage, and according to her divorce agreements, she left Saudi Arabia and built a fortune by investing in real estate and stocks. She wrote about her marriage in her 2000 book La Vérité: autobiographie. Ayoub stated she wrote the book to explain her situation, and to address allegations published in the Middle East by a Lebanese magazine that she was a modern-day Madame Bovary. As Scott MacLeod of Time Magazine wrote: "But if her tale provides a rare look at the extravagance often wrought by unimagined wealth, it also serves as a disturbing manifesto against the extreme restrictions imposed on women by some ultraconservative Arab societies." Her former husband filed suit in an attempt to stop publication of the autobiography. The book became a best seller in France. In 1997, she bought a boat from Bernard Tapie, the Phocéa, for €5.56 million to which was added €18.25 million worth of work. To pay for this work Ayoub sold a number of her jewels including "The Mouna diamond," one of the largest yellow diamonds of the world for a price of €2.52 million and a Bulgari necklace for 15.3 million francs. After getting rid of the yacht, she sold the contents in a well publicized auction. The Associated Press estimated her net worth at over $300 million. In 2006, The New York Times offered a figure of about $500 million. She has the largest private collection of haute couture in the world, encompassing more than 10,000 items. She never wears the same item of couture twice, and all of the major couture houses maintain an Ayoub mannequin for a proper fit in her absence. The Associated Press claimed: "She's also a couture philanthropist. She has just donated what's been described as the most expensive dress made to Paris' Musee de la Mode — a gold Chanel dress that cost over 300,000 euros." Her rags to riches story, involving cross cultural tension and claimed "scandal", has been the subject of intense reportage. As The Daily Telegraph reported: "ONE of the richest women in the world will this week disclose how a disastrous marriage to a Saudi Royal family adviser drove her to depression and attempted suicide."
