the yazidi girl has recently been released after nearly a year as a prisoner in the islamic state , where women and young girls from the religious minority are known to be kept as ` sex slaves ' .
earlier this week , more than 200 yazidi women , children and elderly were released near kirkuk , northern iraq , aid workers report .
the freed yazidis were taken away by ambulances and buses to receive treatment and care .
about 40 children were among those released .