- 15-year-old Aria's hometown in Iraq was attacked by ISIS
- Aria was captured and held with other girls
- Aria managed to escape, but learns her brother was killed by ISIS
- Sexual violence remains a tool of war for ISIS, but a taboo
Dohuk, Iraq (CNN)"Aria" is only 15, smiling as she greets and welcomes us into her family's tent inside the Khanke refugee camp in northwest Iraq.