[9][8] In 2007 just before her 12th birthday[7] her parents sold their crayfish quota and moved the family north to Leigh near Warkworth where Demant initially attended Mahurangi Christian School in Snells Beach, which assisted her in the transition from te reo into an English-speaking teaching system.

Encouraged by their mother Vikki, Demant and her sister Kiritapu played touch rugby for Mahurangi, Harbour, Sharks and in the Whangteau competition.

[9] While playing for Mahurangi College senior girls touch team, Demant suffered what a ACL (anterior cruciate ligament) injury to her knee.

[11] Upon arriving for their first training run Demant later recalled “I remember Dad drove Kiritapu and me to our first practice and we saw these huge Tongan props approaching the car.

[10] Her rugby was curtailed early in the 2013 season, when 10 minutes into a game against Taranaki she ruptured the anterior cruciate ligament (ACL) in her left knee.

[10][8] At the age of 23 Demant made her debut for Black Ferns at first-five eighth in Sydney against Australia on 18 August 2018 which the team won 33–11.

Demant’s performance in the domestic season saw her once again selected for the Black Ferns, this time playing in games in San Diego in July 2019 against Canada, the USA, France and England (beaten 28–13).

[12] With Covid preventing international travel Demant played for the Black Ferns in their only two games of the season, both against the New Zealand Barbarians.

[21][22] For the August test series against Australia for the Laurie O'Reilly Cup Demant was once again selected to lead the Blacks Ferns, but with Kennedy Simon who was returning from injury as her co-captain.

[34] It was presented in the Grand Hall of Parliament at an occasion attended by the Governor General Sir Jerry Mateparae, Willie Apiata, VC and Minister of Education, Hekia Parata.

[38] In the 2023 King's Birthday and Coronation Honours, Demant was appointed a Member of the New Zealand Order of Merit, for services to rugby.

[10] After completing a BA/LLB majoring in Sociology and Law at the University of Auckland in 2020[8] Demant worked at the North Shore District Court as a Deputy Registrar in the Judge Alone Trials Team.

[11] Her relative Te Whetu Werohia Tipiwai composed the Black Ferns haka Ko Uhia Mai.