[3] Through the round robin, she led her team of third Henwy Lochmann, second Laura Engler and lead Philipp Hösli to a 6–1 record, finishing second in their pool.

After winning their first two games, the team lost in the quarterfinals to China's Han Yu and Great Britain's Ross Whyte.

After a 2–1 round robin record, the team won 6–5 over Corrie Hürlimann in the quarterfinals and then upset Elena Stern 9–4 in the semifinals.

At the 2021 Women's Masters Basel, the team went 4–0 through the round robin before dropping the quarterfinal 8–7 to eventual champions Denmark's Madeleine Dupont.

[11] Team Keiser had three semifinal finishes in a row at the Alberta Curling Series Thistle, Camrose, and the St. Galler Elite Challenge.

In January 2022, they won their first tour event when they defeated Germany's Daniela Jentsch 5–2 in the final of the International Bernese Ladies Cup.

[16] Due to their strong results early in the season, Team Keiser qualified for the 2022 National Grand Slam of Curling event.

Playing without third Elena Mathis who was out due to illness, Witschonke, Keiser, and Lörtscher finished 3–1 through the round robin to qualify directly for the playoffs.

At the Tour Challenge, the team started with two straight losses, but then beat Chelsea Carey and Tabitha Peterson to get into a tiebreaker which they lost 4–2 to Gim Eun-ji.

[23] To begin the 2023–24 season, Team Tirinzoni won 14 straight games in their first two events to claim the 2023 Women's Masters Basel and the 2023 AMJ Campbell Shorty Jenkins Classic, going an undefeated 7–0 at both.

At the first Slam of the season, the 2023 Tour Challenge, the team had an undefeated record through the round robin before losing 7–4 in the quarterfinals to Jennifer Jones.

[26] They bounced back immediately with another undefeated run to win the Stu Sells 1824 Halifax Classic, their third title of the season.

[28] In November 2023, Team Tirinzoni won the gold medal at the 2023 European Curling Championships, finishing a perfect 11–0 through the event.

[31] They followed this with a quarterfinal finish at the 2024 International Bernese Ladies Cup, dropping a 4–3 decision to the Xenia Schwaller junior rink.

[32] At the World Championship, the team finished the round robin in second place overall with a 10–2 record after losses to Canada's Homan and Scotland's Rebecca Morrison.

[34] They ended the season on a positive note, however, as at the 2024 Players' Championship they beat the Homan rink in the semifinals before defeating Team Wranå 6–5 in the final with Witschonke claiming her first career Slam title.