The rise and fall of Sinn Fein's Michelle O'Neill

For someone who had been working in the Assembly for Sinn Fein since 1998 - she was just 21 - as a political advisor to the Mid-Ulster MLA Francie Molloy, who was elected in her own right in 2007 and who served as a minister in both the Department of Health and Department of Agriculture and Rural Development, there was still quite a lot of surprise when Michelle O'Neill was chosen to replace Martin McGuinness in January 2017.