text: 25 November 2015 Last updated at 00:26 GMT
  She managed to escape the city and is now a refugee in Europe, where she met up with the BBC.
  This story is based on her experiences and those of her two sisters, who are still inside the IS-held city.
  Names and the timings of some events have been changed to avoid compromising the safety of Nour or her family.
  Video produced by Vladimir Hernandez, Faisal Irshaid and Najlaa Aboumerhi. Animation by Luis Ruibal
  Our 100 Women season showcases two weeks of inspirational stories about the BBC 100 Women and others who defy stereotypes around the world.
  Like us on Facebook and follow us on Instagram using the hashtag #100Women. Listen to the programmes here.
target: Nour is a woman from Raqqa, the so-called Islamic State's (IS) capital inside Syria.