With the elimination of compulsory figures—formerly Trenary's strength—from competition, the technical standard for jumping in women's skating had risen greatly, with the top skaters all attempting five or six different triples. Championships, beginning her comeback in fall 1991 at Skate Canada, where she finished second in the short program to Surya Bonaly, but dropped to fourth overall after the long program, where she was unable to successfully land any triple jumps. She ended her bid to qualify for the 1992 Winter Olympics in December 1991.
Originally from Minnetonka, Minnesota, at the age of 16, she relocated to Colorado Springs, Colorado to train with noted coach Carlo Fassi. One of her signature moves was a combination of a one-foot axel into a triple salchow.
Trenary placed 5th in her first senior national championships in 1986. Trenary's triple jumps included the toe loop, salchow, and flip, which was quite competitive for a female singles skater in the mid-to-late 1980s.
During a warm-up in 1985, she collided with another skater, whose blade sliced Trenary's calf muscles and severed an artery in her left leg. The International Skating Union eliminated figures after that season.
In fall 1986 she placed second to Elizabeth Manley at the St. At the 1987 World Championships, she rallied from 11th in the compulsory figures to place fourth in the short program, again landing the triple flip jump in combination, and fifth in the long program, to place 7th overall. She was 5th in the short program and second in the free skate to Midori Ito but her top placement in the figures kept her in the lead overall.
Trenary retired from skating in 1997 after developing a life-threatening blood clot in her shoulder.
Trenary married British ice dancer Christopher Dean on October 15, 1994. Dean's agent confirmed in March 2010 the couple had separated.
"She used to say there were three people in our marriage," he said.
In the long program Trenary landed four clean triple jumps, including the triple flip, and she upset reigning world champion Debi Thomas to take her first senior national title. Trenary won bronze at the 1989 World Championships.
championships in 1987, she finished second in both the compulsory figures and short program, where she landed a triple flip jump for the first time in her combination. Due to her strength in compulsory figures, Trenary again won the U. Championships in 1989, although she was defeated by Kristi Yamaguchi in the free skating.