After juniors, Peterson continued to play with Hamilton for on season (at second), until joining the Nina Roth rink in 2013 as her second. Peterson competed at the 2014 Ford World Women's Curling Championship as the alternate on team USA, skipped by Allison Pottinger (finished 6th). In 2014, she joined the Aileen Sormunen rink. With Sormunen, Peterson won her first World Curling Tour event at the 2014 St. Paul Cash Spiel. She also played in her first Grand Slam event that season, going all the way to the semifinals of the 2014 Colonial Square Ladies Classic. The team acquired enough WCT Order of Merit Points to qualify as the U.S. National team for the 2015 World Women's Curling Championship.