At the 2023 Swiss Championships, Kaiser won the gold medal for the first time. She finished the season by making her European Championship debut at the 2023 edition, where she placed eighteenth.[3]
2023–24 season: Top 10 at European and World Championships
Appearing at the 2024 European Championships in Kaunas, Kaiser set new personal best results in both segments and overall and finished fourth at the competition, 7.57 points back of bronze medalist Nina Pinzarrone of Belgium. Of the result, Kaiser remarked "I still could do a little bit better but honestly, I am super pleased."[4] Her new free skate program that she adopted for the second half of the season included music from The Hunger Games: The Ballad of Songbirds & Snakes, and drew praise from the film's star, Rachel Zegler.[5]
In the leadup to the 2024 World Championships, Kaiser won gold at the 2024 Bavarian Open.[3] At the World Championships, she came in ninth, and said she was "very happy I could finish my season with another good competition."[6]
In mid-December, Kaiser won the silver medal at the 2025 Swiss Championships behind Kimmy Repond.[7] She was assigned to compete at the 2025 European Championships; however, she withdrew after sustaining a two-centimeter deep cut on her calf from her training partner's blade only two days before she was set to leave for the event. It was soon determined that her wound had caused muscle damage as well as the formation of a fist-sized hematoma that required surgical removal.[8][9]
Shortly before the 2025 World Championships in March, Kaiser resumed training. At the event, she placed twenty-third in the short program and remained in twenty-third after the free skate.[10] Her placement, in addition to Kimmy Repond's twelfth-place finish won Switzerland two quotas for women's singles skating at the 2026 Winter Olympics.[11]
Despite Kaiser still not being fully recovered from her injury the previous season, she still opted to compete in attempt to ensure her spot on the Swiss Olympic team.[9] She opened her season by competing at the 2025 CS Nebelhorn Trophy but withdrew following the short program. She then went on to compete on the 2025–26 Grand Prix series, finishing twelfth at the 2025 Grand Prix de France and at the 2025 NHK Trophy. Between the two events, she placed sixth at the 2025 Swiss Open.[7]