Marsters was educated at Tereora College, and subsequently trained in New Zealand, Australia, and Europe.
[2] She first represented the Cook Islands internationally at the Coca Cola Games in Fiji in 1994.
[2] Since 2000 she has worked for the Cook Islands Sports and National Olympic Committee.
[3][4] In 2019 she moved to Suva, Fiji for a position with the Oceania National Olympic Committees.
This biographical article relating to Cook Islands athletics is a stub.