Omaima Hoshan was 11 years old when the war in Syria forced her to flee to Jordan with her family. The Hoshans left Damascus in 2012 and sought refuge at the Zaatari refugee camp -- one of the largest in the world.

Her main concern when she arrived at Zaatari was to resume her education and make new friends in the camp. In the classroom, she discovered a troubling trend.

"When I got to sixth grade, I started hearing about girls as young as 12 or 13 getting married. They would come to the school to say goodbye," the now 15- year-old, told visitors from the United Nations refugee agency, UNHCR , in April. "I remember thinking that they were making a big mistake."

When one of her closest friends, Basma (whose real name has been changed), told her that she was to be married at the age of 14, Omaima's outrage reached new heights, and propelled her into action.

"We were always together, she was one of the best students in our class," Omaima told UNHCR visitors. "She did not want to get married, but her parents thought it was the best choice for her."