Williams graduated from Southern Cross University in New South Wales, Australia with an Master of Business Administration and as of the start of 2014 was completing a doctorate on Pacific women"s leadership.
After Alfred Ngaro she is the second Cook Islander elected to the Parliament. Williams has worked for the Ministry of Education, BirthRight, Healthcare New Zealand and disability agencies. She moved from Auckland to Christchurch"s suburb of New Brighton in January 2013 to take up a position as regional manager of the Street John of God Hauora Trust.
She resigned from that role during the election campaign so that she could focus "110%" on the election.
Williams first got politically involved through making submissions on family violence and child welfare issues, which she has a strong interest in. She has served as a member of the Community Child Protection Review Panel, was involved in the Waitakere Community Law Service and Community Waitakere, and was part of the Living Wage Campaign and the LIFEWISE Big Sleepout.
On 28 January 2014, Williams was sworn in as a Member of the House of Representatives.