providing 4 assists to share the top of the team scoring leaderboard with Lynn Williams. On September 9, 2015, the NWSL announced that Mewis was selected as a finalist for the NWSL Rookie of the Year Award for the 2015 season, along with Sofia Huerta and the eventual winner, Danielle Colaprico. In the 2016 season, Mewis missed several games as she was away training with the U.S. WNT in preparations for the 2016 Summer Olympics. The Western New York Flash finished fourth in the standings and qualified for the play-offs. In the semi-final, Mewis scored a goal in the 16th minute helping the Western New York Flash to upset the Shield winning Portland Thorns. In the NWSL Championship game Mewis once again scored a goal. The Championship game went to penalties, Mewis missed her penalty but the flash went on to win the Championship, winning the penalty shootout 3–2. North Carolina Courage, 2017–2020 It was announced on January 9, 2017, that the Western New York Flash was officially sold to new ownership, moved to North Carolina, and rebranded as the North Carolina Courage. Mewis had a very successful 2017 season, as she appeared in every game for the Courage, tallying 6 goals and 3 assists. She was named to the NWSL Best XI and was a finalist for the NWSL Most Valuable Player Award. Mewis missed the beginning of the 2018 season as she was recovering from a knee injury. She appeared in 17 regular season games, as the Courage won their second consecutive NWSL Shield. In the play-offs, Mewis was in the starting line-up for the semi-final match against the Chicago Red Stars and scored a goal in the 86th minute. North Carolina won 2–0 and advanced to their second straight championship game. She played all 90 minutes in the NWSL Championship game as the Courage defeated the Portland Thorns 3–0. Mewis has now won two NWSL Championships. Due to her participation in the 2019 World Cup, Mewis only appeared in 12 regular season games for the Courage in 2019. North Carolina won the NWSL Shield for the third consecutive season. They advanced to the final after defeating Reign FC in the semi-final. Mewis scored a goal in the championship game as North Carolina defeated the Chicago Red Stars 4–0 to win their second consecutive NWSL Championship. With the 2020 season affected by the COVID-19 pandemic, Mewis took part