[6] Currently she is head coach at Eastern Suburbs AFC Premier Women's team in Auckland.

[7] In January 2014, Duncan agreed to join English side Notts County after the Australian season had concluded.

Duncan was also included in the New Zealand squad for the 2008 Summer Olympics where they drew with Japan (2–2) before losing to Norway(0–1) and Brazil (0–4).

[11] She scored her first senior international goal in a 10–0 win over Cook Islands at the Oceania Women's Nations Cup on 1 October 2010.

[12] Duncan played for New Zealand at the 2011 FIFA Women's World Cup where she earned her 50th cap in a 2–1 loss to England in the group stages.