Although born in Sydney, Osborne has lived in various parts of New South Wales, including Taree and Thirroul. Osborne began writing in the 1980s and has had a number of short stories published in journals such as Meanjin, Island and Antipodes (USA). She self-published her novel, Falling Glass, after receiving knockbacks from publishers.
Osborne is the daughter of short story writer J. K. Osborne .
