Graça Machel still coming to terms with Madiba's death

As the world commemorates one year since the passing of Nelson Mandela, his widow Graça Machel shared her difficulty in coming to terms with the global icon's passing.

Nelson Mandela's wife Graca Machel at the launch of the Mandela remembrance walk in Houghton on 11 November 2014. Picture: Reinart Toerien/EWN