Leven holds a double degree in International Development and Fine Arts, as well as a Master’s degree in art administration from the UNSW College of Fine Art. She joined, then Cooee Art, in 2007 and over the past 16 years has developed its gallery program, including exhibitions all over Australia and abroad. In 2016, she spearheaded the opening of Cooee’s Paddington gallery and in 2021 the flagship gallery in Redfern. In 2017 she became part-owner of the gallery with Adrian and Anne Newstead and that same year, launched the Auction wing, Cooee Art Auctions. Now, in 2023 Leven is the sole owner of the Gallery.