Missing woman's family 'bracing for the worst'
Media playback is unsupported on your device
Video

London attack: Missing woman's family 'bracing for the worst'

The family of Sara Zelenak, an Australian missing since the London attack, say they are very concerned for her safety.

Her aunt described Sara as a "very special kindred spirit".

Go to next video: 'You're safe, we're going to look after you'