Murphy made her first national appearance at the 2006 Canadian Junior Curling Championships, skipping the Nova Scotia team. After a 7–4 round robin record, her team defeated Northern Ontario in the tiebreaker before losing to Manitoba to claim the bronze medal. Team Murphy (Rhyno at the time) qualified for their first Grand Slam of Curling event at the 2007 Sobeys Slam, going 0–3 in the triple knockout event. In 2010, her team qualified for the playoffs at the 2010 Nova Scotia Scotties Tournament of Hearts where they lost in the semifinal to eventual champion Nancy McConnery. They played in the Sobeys Slam for a second time in 2010, failing to reach the playoffs once again. While still in juniors, Murphy also competed in three U Sports/Curling Canada University Curling Championships representing Saint Mary's University. Her best finishes came in 2008 and 2011 where she skipped the Saint Mary's Huskies to a bronze medal.
