earn the right to represent the United States at the 2018 Winter Olympics. At the Olympics, Team Roth finished with a 4–5 record, missing the playoffs. Due to competing at the Olympics, Team Roth opted not to compete in the 2018 US National Championships. In 2019 Peterson returned to both the United States Women's Championship and Mixed Doubles Championship. In a repeat of the 2017 National Championship final, Peterson's women's team of Nina Roth, Becca Hamilton, and sister Tara Peterson lost to Jamie Sinclair in the final. At the Mixed Doubles Championship, Peterson and Polo went undefeated through the round robin section of the tournament but ultimately lost in the semifinal to eventual champions Cory Christensen and John Shuster. 2019–present Peterson skipped Team Roth during the 2019–20 season as Nina Roth was on maternity leave. They had a semifinal finish at the 2019 Tour Challenge Grand Slam event. At the 2020 United States Women's Championship, Peterson earned her second national title and first as skip. In the round robin, Team Peterson's only loss came against Jamie Sinclair, but they then beat Team Sinclair in the 1 vs. 2 page playoff game and again in the final. As United States Champions Team Peterson would have represented the United States at the 2020 World Women's Curling Championship, but they lost that opportunity when the Championship was cancelled due to the COVID-19 pandemic. They also earned a spot at the final Grand Slam of the season, the Champions Cup, which was also cancelled due to the pandemic. Their qualification will instead carry over to the 2021 Champions Cup. At the 2020 US Mixed Doubles Championship, Peterson and Polo again faced Christensen and Shuster, but this time in the final, and they won 7–4. This was their first mixed doubles national title and earned them a spot at the 2020 World Mixed Doubles Curling Championship and the 2021 United States mixed doubles curling Olympic trials. But about a month before the World Championship was supposed to begin the World Curling Federation announced its cancellation due to the ongoing COVID-19 pandemic. The following year the United States Curling Association announced that the 2021 US Mixed Doubles Championship would be postponed until after the 2021 World Mixed Doubles due to the pandemic, and so as 2020 national champions Peterson and Polo were invited to represent the United States at the 2021 Worlds. During the 2020 off-season,