Dunn found most of her success as a senior-aged (50+) curler. At the age of 53, she formed a senior rink for the first time, having waited for
Lindy Marchuk to turn 50 and be eligible. Marchuk would play third for Dunn, along with Gloria Campbell from St. Catharines and
Fran Todd from Mississauga. The team then went on to represent Ontario at the
2001 Canadian Senior Curling Championships, where Dunn led Ontario to a 7–4 round robin record. The team then won four straight games, including two tiebreakers, to claim the Canadian Senior Championship, beating Manitoba's Linda Van Daele in the final. In 2002, Team Dunn successfully defended their provincial title, defeating
Mary Gellard in the provincial final. The team won the game shorthanded, as lead Fran Todd had fallen in the semifinal, resulting in a broken arm. With Todd injured, the team replaced her with Dunn's former skip, Carol Thompson at lead. At the
2002 Canadian Senior Curling Championships, Dunn led Ontario to a 10–1 round robin record, good enough for first place, earning the rink a bye to the final. In the final, the team beat Alberta's
Simone Handfield team to claim their second-straight national championship. The win earned Dunn and her rink the right to represent Canada at the
2002 World Senior Curling Championships, the inaugural edition of the
World Senior Curling Championships. There, Dunn led Canada to a gold medal, beating Switzerland's
Erika Müller in the final, after posting a 4–2 round robin record. Dunn and her rink could not win a third straight provincial seniors title, having lost to Joyce Potter in the 2003 provincial final. As a result, the team decided to enter the
2003 Ontario Scott Tournament of Hearts last chance qualifier event, where they eliminated the defending provincial women's champion team, skipped by
Sherry Middaugh, beating her in the B final. A the Ontario Hearts, Dunn led her senior-aged team who were dubbed the "Golden Girls" to a 7–2 round robin record. This put the team into the playoffs, where they defeated the previously undefeated
Anne Merklinger rink in the 1 vs. 2
page playoff game, then Darcie Simpson in the final, to claim the provincial championship. The team then represented Ontario at the
2003 Scott Tournament of Hearts on home ice in
Kitchener. There, Dunn led her rink to a 5–6 record, missing the playoffs. In 2004, Dunn and her rink won their third provincial senior title, beating Joyce Potter in the Ontario final. Representing Ontario, the team went undefeated at the
2004 Canadian Senior Curling Championships, winning all 11 of their round robin games, and beating British Columbia's Kathy Smiley rink in the final, to claim their third national title. It was a record fifth provincial title for the team's second, Gloria Campbell who had also won two championships with
Jill Greenwood. They then represented Canada at the
2004 World Senior Curling Championships, where Dunn led the team to a 6–3 round robin record before beating the United States in the semifinal, and Sweden's
Ingrid Meldahl rink in the final. After the
Canadian Curling Association (CCA) re-jigged its championship schedule for the 2004–05 curling season, which meant the 2005 Canadian Seniors would be held at the same time as the 2005 World Seniors, it was decided that Dunn and her team would get to represent Canada again at the
2005 World Senior Curling Championships, but would be forced to not enter playdowns for the Canadian Championship. At the 2005 World Seniors, Dunn led her rink to an undefeated 5–0 record, but lost in the semifinals to Scotland, and in the bronze medal game to Sweden. The team's lead, Fran Todd joined the CCA's board of directors in 2005, and could not commit to curling with the team for the 2005–06 season. She was replaced as lead by the team's fifth, Carol Thompson. With the slight change in the lineup, Dunn won her final provincial seniors title in 2006, defeating Joyce Potter (who had won the championship in 2005 in Dunn's absence) once again in the final. At the
2006 Canadian Senior Curling Championships, Dunn led Ontario to a 10–1 round robin record, earning a bye to the final. There, they beat British Columbia's Jane Adam to claim her fourth national title. The win tied Dunn with Jill Greenwood and
Flora Martin for the most ever Canadian Senior titles for a skip. The win earned the team the right to represent Canada at the
2007 World Senior Curling Championships. There, the team went undefeated in the round robin, and made it to the final after beating Scotland in the semifinal. However, they lost their only game of the tournament in the final, when Sweden's Ingrid Meldahl beat them. Dunn attempted to win another provincial seniors championship in 2008, but finished 2–5 at that year's provincial. In 2009, she lost in the provincial final to
Cheryl McBain. She would qualify for the provincial senior championships again in 2011, and 2012. In 2013, she scored a rare
eight-ender at the Holly Berry Bonspiel in Mississauga, the first time she had done so in her career. In 2016, Dunn won an Ontario Masters title, along with Carol Thompson, Vicki Marianchuk and Fran Todd. ==Personal life==