Renu Begum, the older sister of Shamima Begum, the GCSE student missing from her home in East London and feared to be on her way to Syria, has described the devastating impact of her disappearance.
She said the family are still hoping that she was just visiting her friend who had made the same journey to Syria to "talk some sense into her."
She says the family are desperate to have their baby home, and safe and that they love her more than anyone else in the world could.
New footage appears to show three missing London schoolgirls in Turkey during what is believed to be their journey to Syria.
The families of three schoolgirls who fled to Syria to join IS have questioned claims they funded their journey by selling family jewellery.
Relatives of London schoolgirls thought to be in Syria tell ITV News police failed to warn them the girls were at risk of radicalisation.?