Cosette is formerly from Australia. Her childhood and teens were spent in small rural townships across Victoria. Early life was spent exploring the outdoors. In 1994 at age 18 she made the move to Timaru, New Zealand. Enrolling at Aoraki Polytechnic she studied first year Foundation Visual Arts and then completed a second year of Fine Arts painting in 1995. Studying under the tutelage of Mike Armstrong and Paul van den Bergh.

Historically an oils painter Cosette is exploring mixed media painting with an emphasis on Acrylics. Cosette enjoys freedom of expression and colour in her artwork.

Artistic influencers include Gustav Klimt, Edouard Manet, Jackson Pollock and Mark Rothko.

Based in Ōtautahi Christchurch with her teenage son. She spends her time exploring the Arts, painting, reading books, playing Tennis and studying Te Reo Māori. Cosette is also a throat cancer survivor.

In addition to her art practice, since September 2025 Cosette writes a monthly wellbeing column, Advice with the experts for Canterbury lifestyle magazine Metropol. A passionate advocate for health and wellbeing, she enjoys promoting care and connection within the community.

Cosette is represented by Chambers Art Gallery Christchurch.