 She finished in the top ten at four ISU Championships – 1969 Worlds in Colorado Springs, Colorado, USA; 1969 Europeans in Garmisch-Partenkirchen, West Germany; 1970 Europeans in Leningrad, Soviet Union; and 1971 Europeans in Zürich, Switzerland.Zillmer was born in West Point, New York, the daughter of Madeleine (née Mueller) and David Zillmer.She was coached by her mother.