During her early diving career, she was compared to Cindy Shatto and in 1975, became only the second Canadian diver to break the 400 point barrier in an age class competition.

She was selected to represent the Canadian national diving team at the 1980 Summer Olympics in Moscow before Canada announced a boycott of the event in protest of the Soviet invasion of Afghanistan.

In October 2001, by that time a school teacher, Kiefer was one of seven people enshrined in the McGill Sports Hall of Fame, making her just the fifth woman to be inducted.

[1] At the age of seven, Kiefer made the big decision to choose diving over gymnastics, commenting that "at the time I didn't really know what the future might hold for me".

[2] In 1974 during the Canadian National and Junior Diving Championships, Kiefer's performances were described as being among the most prominent, winning the 1-metre and 3-metre events in her respective categories in what was considered "the most outstanding showing".

[4] She also finished as runner-up in the women's 3-metre springboard event at the 1974 Los Angeles Invitational diving championship, losing out to Cynthia Potter by a points total of 415.40 to 460.25.

[5] During May 1975 at the National Junior Olympic Diving Championships, Kiefer won four gold medals and was described as being "undoubtedly the strongest female diver to test a board since Beverly Boys, with unanimous consensus among coaches that she could become "the best in the world".

[7] Through the early 1970s, she did not lose a single age-group meet until a 3rd place finish at the Winnipeg Canadian Nationals, which she was disappointed with and by her own admission "is not what I had expected".