On July 20, 1958, she set a new world record in the individual 200 m medley. One year later, on July 19, 1959, she broke the world record of Tineke Lagerberg in the 200 m butterfly. She lost that record to Marianne Heemskerk in 1960, but took it back in 1961.
She was also part of the United States relay team that set a new world record in the 4×100 m medley at the 1959 Pan American Games.
After marriage she changed her last name to Furst.