Her parents are Australian actor Peter Carroll and Trisha, a former historian and archivist for the Sydney Theatre Company.

[2] At the age of five, Carroll was an extra in the television western series Five Mile Creek which featured her father.

She made her professional stage debut in a Sydney Theatre Company production of Six Characters in Search of an Author in 1987.

Carroll first received wide notice as Marianne Renate in the Australian tour of the Johnny O'Keefe jukebox musical Shout!

[5] She subsequently reprised the role when the show transferred to London's West End, playing at the Apollo Theatre from 6 November 2017.