[1] Edwardes is the co-founder and artistic director of Ensemble Offspring, roles she shared with composer Damien Ricketson until his retirement from the group in 2015.
[8] In 2021, Edwardes created The Australian Marimba Composition Kit[9] and a comprehensive list of percussion works by female composers.
She began learning piano at age 5 while living in country Victoria for several years and on returning to Sydney studied with Faye Lake throughout her life into her early 20's.
[5] In 1999, Edwardes won the Symphony Australia Young Performers Award before relocating to the Netherlands to complete a master's degree at Codarts (with teachers Richard Janssen and Hans Leenders) and the Conservatorium van Amsterdam (with teachers Peter Prommel, Jan Pustjens and Nick Woud [nl]) on a Dutch Government Nuffic Huygens Scholarship.
[13] During this time she also worked closely with composers including Louis Andriessen, Unsuk Chin, Harrison Birtwistle and Steve Reich.