[1] After seeing a production of A Streetcar Named Desire on stage in Brisbane as a teenager, Sullivan became enamoured with the idea of acting, and planned to audition for one of the major drama schools.

Both were given round trips to Los Angeles to increase their profiles in the US market, as well as a scholarship to attend masterclasses at Screenwise Film and Television School in Sydney.

Later that year, she became the face of Australian pearl company Paspaley, starring in a 60-second advertising video shot on the Kimberley coast in Western Australia.

[3][2] In October 2018 Paspaley, an Australian pearling company, launched its new ad campaign entitled "Something Real", featuring Sullivan.

[22][23] As of October 2023[update] Sullivan was trying her hand at screenwriting, working on a "confrontational" comedy-drama for a male lead, while staying with a friend in the Northern Rivers region of New South Wales.