Career
Muir represented New Zealand in two sports, playing with the Tall Ferns from 1952–1962 and the Silver Ferns from 1960–1963. She later became head coach of the Silver Ferns for 15 years from 1974–1988. During this time she coached the Silver Ferns to World Championships gold in 1979 (jointly with Australia and Trinidad and Tobago) and in 1987.
She was educated at Otago Girls" High School in Dunedin.
Muir was appointed an Officer of the Order of the British Empire, for services to netball, in the 1984 New Year Honours and was inducted into the New Zealand Sports Hall of Fame in 1993. In August that year, she was also diagnosed with breast cancer.
She also took up a coaching position with the Otago Rebels until the end of 2005.
