[3] She received her secondary education at Napier Girls' High School and was head prefect in her final year.

[6] Twigg joined fellow former IOC employee Rebecca Wardell and another rower in April 2018 to cycle from Switzerland towards Singapore for four months, but changed her mind after six weeks and flew home instead to restart training and be with her new partner.

[3] For the 2004/05 southern hemisphere summer season, Twigg switched to the single scull boat class.

[1] The following season, Twigg was back in the single scull because every other boat was already full (Georgina and Caroline Evers-Swindell had the double, and Nicky Coles and Juliette Haigh were in the pair).

[3] At the 2007 World Rowing U23 Championships in Glasgow, United Kingdom, she won a gold medal with three boat lengths ahead of the silver.

[10] At the 2007 World Rowing Championships at Oberschleißheim Regatta Course near Munich, Germany, she came sixth and this gave New Zealand a qualification for this boat class at the 2008 Summer Olympics.

[12] At the 2009 World Rowing Championships in Poznań, she came in fourth place, narrowly beaten by Czech rower Miroslava Knapková for the bronze medal.

[1] In 2010, Twigg travelled to Europe to compete in World Rowing Cups I and II, gaining a second and a seventh placement.

The study timetable meant that she would miss the 2015 World Rowing Championships, which doubled as an Olympic qualifying event.

[1][5] At the 2016 World Rowing Cup III in Poznań, she was beaten by her then-arch rival Kim Brennan from Australia and had to settle for second place.

At the 2016 Summer Olympics, she very narrowly missed out on a medal, just beaten by the Chinese rower Duan Jingli for bronze.

[14] By the time the 2018 Christmas Regatta was held at Lake Karapiro, she had regained her national dominance in single scull, leaving Brooke Donoghue and Hannah Osborne for second and third place, respectively.

[16] In February 2019 at the NZ Rowing Championships held on Lake Ruataniwha, Twigg took out the national title, with Donoghue and lightweight rower Zoe McBride coming second and third, respectively.

[17] With other elite rowers, she travelled to 2019 World Rowing Cups II and III in Poznań and Amsterdam, which she both won.

[1] The 2019 World Rowing Championships qualified New Zealand to be represented in this boat class at the 2020 Summer Olympics in Tokyo.

[28] In the 2022 Queen's Birthday and Platinum Jubilee Honours, Twigg was appointed a Member of the New Zealand Order of Merit, for services to rowing.