Born in 1965 or 1966,[1] Redmayne received a Bachelor of Arts degree from the University of Otago.

[9] On 5 November 2022, Redmayne was announced as National's candidate for Rangitīkei at the 2023 general election.

[11] She also identified the financial problems facing Ruapehu Alpine Lifts as an issue she would like to help solve as an MP.

[8] She also said that she would cross the floor if National Party leader Christopher Luxon proposed changing any New Zealand abortion laws.

[9] Final results released on 3 November confirmed that Redmayne had won by a margin of 9,785 votes.