In 1957, she won the 110-, 220-, and 440-yard treble at the Australian Championships in the absence of her main rivals, but from that point on her career was plagued by illness and weight problems. She was selected in the 1958 British Empire and Commonwealth Games purely as a relay swimmer, winning gold in the event. At her second Olympic Games, the 1960 Summer Olympics in Rome, she only competed in the 4 × 100 relay heats; her teammates went on to win silver in the final. She retired from competitive swimming following the Rome Olympics.