She was known for her voice in leading roles, including world premieres, but also for her stage presence and "a unique sense of comic timing".

[1] In 2006, she appeared as Dorabella in Mozart's Così fan tutte in the first performance of the Victorian Opera, conducted by Richard Gill.

[4] In 2013, she performed the roles of Meg Page in Verdi's Falstaff, Lady Billows in Britten's Albert Herring, and both Fricka and Second Norne in Wagner's Der Ring des Nibelungen.

[1][8] She collaborated with directors including Neil Armfield, Lindy Hume, Barrie Kosky, Stuart Maunder and Graeme Murphy.

Reviewer Lesley Reed noted in Stage Whispers: "The standout performance comes from Jacqueline Dark as The Mother Abbess.

She embodies the firm but caring mother and her towering, glorious voice closes the first act with a stunning rendition of 'Climb Ev'ry Mountain'.