Born in Adelaide, South Australia in 1957, Mann got her first big break playing Tina Harris in 1970s soap opera The Box. She is possibly best remembered to audiences for playing a character who ended up behind bars, deaf biker's moll Georgie Baxter in Prisoner. Mann played the lead role of guitarist / singer Carol Howard in the 1984 ABC-TV series Sweet and Sour, and also played the lead role in police drama Skirts (1990).
Other TV appearances include Glenview High, The Sullivans, The Young Doctors, Arcade (she played Susie Blair, Syd Heylen and Aileen Britton's daughter), Holiday Island, Prisoner, A Country Practice, Cowra Breakout, GP, Sword of Honour, Noah and Saskia, Home and Away, Bluey, Cyclone Tracy, Good Guys Bad Guys, Col'n Carpenter, Watch This Space, The Flying Doctors, Kingswood Country, Boys from the Bush, How Wonderful!, Janus, Spring & Fall: Out of Line, Water Rats, All Saints, Cop Shop, The Oracle, The Tromaville Cafe, Skyways, Ash Wednesday, Glenview High, The Four Minute Mile, Matlock Police, MDA, Bellbird, Players to the Gallery, Loose Ends and Blue Heelers.
Mann's first starring role on the big screen was low budget drama Hard Knocks; she won an AFI award for Best Actress in a Leading Role as a young ex prisoner being hassled by the police. She played sister to the main character in New Zealand film The Scarecrow (aka Klynham Summer), which was invited to play at the Cannes Film Festival. Mann has also appeared in Yahoo Serious movie Reckless Kelly, Hating Alison Ashley and Any Questions for Ben?.
Mann provided the voice of the Holophone in an episode of children's science fiction series Silversun and Susie Sponge on the second season of popular animated series The Toothbrush Family. Her other voice acting roles include animated series Classic Tales, Kangaroo Creek Gang and Tracey McBean (both produced by Southern Star Entertainment).
Mann has related her conversion to Buddhism:
"I was sort of unconsciously on a bit of a path... I was doing a show called 'Janus'... I just reached a point that my spirit, my consciousness, had said, "Tracy, enough, Now you have to get it... And I had five weeks off of filming 'Janus' and went to Nepal... to go to a monastery to study Buddhism."