She was a member of the National swimming team from 1971 to 1976. Dessy performed the 100 m breaststroke and 100 m freestyle at the 1974 European Aquatics Championships. She was part of the National team during the Latin Swimming Cup in Marseille 1974, Las Palmas 1975 and Acapulco 1976; she also participated at the Five Nations Swimming Championships between 1973 and 1976 in Järfälla, Minsk, Erfurt and Nice.