Kañevsky is Jewish  She started playing at age seven in Los Cardales Club, moving to Náutico Hacoaj three years later. In 2005, she was part of the National Junior Championship, and a year later had her debut with the senior team, finishing third at the World Cup.
In August 2008, she won the bronze medal with the national field hockey team at the 2008 Summer Olympics in Beijing. In September of the same year she moved to the Netherlands to play with the team of Haagsche Delftsche Mixed Hockey Club (HDM). In 2010, she won the World Cup held in Rosario, Argentina.
In 2019, she returned to the national team after an eight-year gap under the coaching of Carlos Retegui.
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