BBC NEWS: The future of the Yazidis in Iraq
"They are there. Recently, one member escaped, but the others - we don't know," another Yazidi woman says, another who does not want to give her name, lest there be reprisals against members of her family still inside IS-held territory.
She was speaking at a rehabilitation centre in Qadia refugee camp, run on behalf of a British charity, The Lotus Flower.