2012 European Short Course Championships In the semifinals of the
2012 European Short Course Championships in
Chartres, France, she broke the
Dutch record in the 100 meter backstroke (
short course) with a time of 57.16 s. She finished 4th in the final.
2016 Summer Olympics Toussaint qualified for the
2016 Summer Olympics in Rio de Janeiro in the
100 meter backstroke. Her time of 1:00.25 exactly matched the
Olympic Qualifying Time. She finished 18th in the heats and did not advance to the semifinals.
2018–2020 In December 2019, Toussaint was found innocent and that no anti-doping rule violation had occurred following an investigation by
FINA of one of her doping test sample results from 2 November 2018. FINA had earlier dropped its accusations against Toussaint in March 2019.
International Swimming League In 2019 she was member of the
2019 International Swimming League representing
Team Iron. She finished second in both the 50 and the 100 backstroke in London. In
2020 International Swimming League she represented
London Roar.
2021 Swimming World Cup Toussaint competed in the
2021 FINA Swimming World Cup, where she earned a total of 11 medals, all of which were
gold medals. Her performances across all four stops of the World Cup circuit were dominant enough for her to place second overall in terms of total points scored by a competitor, male or female, for all four stops, a total of 227.4 points, and she earned $103,500 of prize money.
FINA ranked the accomplishment of Toussaint winning a gold medal in every backstroke event she raced in the month-long World Cup competition as their number six moment from the competition. ==Personal life==