She was the head coach of the Canada women's national field hockey team from 1976 to 1995.
Her teams medal-led at the World Cups in 1983 (silver) and in 1986, and bronze at the Pan Am Games in 1987. van der Merwe coached the York Lions from 1971 to 1999.
[2] During this time, the Lions won six silver and two bronze medals in the Canadian Interuniversity Sport competition, and seven Ontario University Athletics championships.
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