AlFayez , Wife of Saudi Arabia billionaire appealed ahead of Obama's visit to the kingdom on Friday, during which US lawmakers have urged him to address rights violations in Saudi Arabia. "Since 13 years, my daughters Sahar, Maha, Hala and Jawaher are being held captive," AlFayez told . "They need to be saved and released immediately." She added: "Mr Obama should take this opportunity to address these grave violations committed against my daughters." AlFayez, who married the Saudi king when she was only 15,said her daughters had recently had their twice-monthly trips to buy food, water and medicine for themselves and their pets stopped.