She won her place at the Olympics by winning the Oceania qualifier, held in November 2023 in Melbourne, Australia.
For years Tetzlaff had to train in other countries, as the nearest speed wall to New Zealand was thousands of km away in New Caledonia.
[5] In a World Cup in Chamonix prior to the 2024 Summer Olympics, she set another personal best and an Oceania record with a time of 8.40.
She exited the competition later that same day, posting a 8.41–second run in a round where she was eliminated by Aleksandra Kałucka of Poland.
Tetzlaff is a part-time master's student in environmental science, at the University of Waikato, focusing on the shallow water near the shores of Lake Tarawera.