Although born in Scotland, Duncan's career was largely based in Northern Ireland.
[1] Duncan settled in Belfast and, in 1980, took a post-graduate diploma in printmaking at the Ulster Polytechnic and then co-founded the Seacourt Print Workshop based in Bangor, County Down.
[3] She had a number of solo exhibitions and gallery shows throughout her career.
In 1986 her exhibition Sense and Symbols was held at the Octagon Gallery in Belfast, a solo show was held at One Oxford Street, Belfast in 1993 and her series of etchings inspired by John Tavener's The Protecting Veil was exhibited at the Royal Northern College of Music in Manchester during 1993.
[1][3] Duncan also worked with the composers Piers Hellawell and Deirdre McKay to produce images inspired by their music, for exhibitions or to accompany their musical performances.