After receiving the "Premier Prix" at the Quebec Conservatory of Music, she undertook the Artist Diploma Programme at Indiana University with distinguished professor and violinist Joseph Gingold. Mallette was Concertmaster of the Auckland Philharmonia (New Zealand) during 1998 and 1999. Prior to this, she was Concertmaster of the Laval Symphony Orchestra and Quebec Youth Orchestra, freelance Concertmaster of the Montreal Ballet and Opera Orchestra and Assistant Concertmaster of the Quebec Symphony Orchestra. Other Canadian orchestras she has played with include the Montreal Symphony Orchestra, National Arts Center Orchestra and Nova Scotia Symphony Orchestra.
An active chamber musician, Mallette performed extensively throughout the USA and Europe as a guest artist with New York's renowned Orpheus Chamber Orchestra. She also played with the Morency Quartet, De Seve Quartet, Ottawa String Quartet and in the duo Mallette-Fabi (with pianist Marie Fabi).
She has attended masterclasses with Yehudi Menuhin, Joseph Silverstein, Joseph Gingold and Stefan Georghiu and has appeared in numerous chamber music festivals in Canada, Germany and New Zealand.
Recently, Mallette has been Guest Concertmaster with the Melbourne Symphony, Tasmanian Symphony, Western Australian Symphony and Orchestra Victoria.
In addition to this she has also been Co-ordinator of Strings at the Australian National Academy of Music and tutor in violin at the University of Melbourne.
Since returning to live in Montreal in 2003, Mallette has performed as a member of “La Pieta” and in ensembles such as the Montreal Symphony Orchestra and the National Arts Centre Orchestra. In 2004 she was appointed Associate Concertmaster in Orchestre Metropolitain, where she also held the position of Interim Concertmaster for two years. Professor of violin at Sherbrooke University since 2007 and McGill University since 2012, she has also lead sectionals and coached students in audition preparation at the Conservatoire de musique du Québec à Montréal in 2010 and 2011.