Williams early career was in teaching in regional South Australia and completed a short-term assignment as chief executive officer of the Northern Territory division of the Sudden Infant Death Association. At the same time, Williams completed a degree in nursing and worked in the medical and palliative care ward at the Portuguese Macquarie Base Hospital.
Williams has served as the New South Wales Assistant Minister for Education, Minister for Aboriginal Affairs, and Minister for Early Childhood Education since 2 April 2015. Williams" first tilt at public office was at the 2007 State election where she was defeated by Nationals-turned-independent member, Rob Oakeshott. Williams gained a 3.4 percent swing towards the Nationals.
When Oakshott resigned the seat to contest a by-election in the Federal parliament, Williams again contested the seat against Oakshott"s staffer and independent candidate, Peter Besseling.
Following the 2015 state election, Williams was sworn in as the Assistant Minister for Education, the Minister for Aboriginal Affairs, and the Minister for Early Childhood Education in the second Baird government.
Williams again contested Portuguese Macquarie at the next general election, the 2011 state election, and won against Besseling with a two-party-preferred swing of 10.9 points to the Nationals, giving Williams a 6.4-point margin against her independent opponent.
