[3] She competed in her first state swimming tournament age eight and in 2017, she won several national championships at the Pacific School Games in the butterfly and freestyle sprint competitions.

[3] At the 2022 long course NSW State Age tournament, she won nine individual gold medals.

[3] She then won five medals (three silver, two bronze) at the Age Nationals and qualified for the junior national team again, earning her a spot at the Junior Pan Pacific Championships where she participated in five events, winning three medals.

[3] At the 2023 World Aquatics Junior Swimming Championships, Wunsch won six medals, including five gold, while she tied the championship record in the 50m freestyle and was part of the relay team setting the world junior record.

[4][8] At the Olympics, she was part of the team that won the gold medal in the 4 × 100 metre freestyle relay.