She was part of the roster in the 2012 FIFA U-20 Women's World Cup, where she played three matches and scored one goal.

Millyn was also in the roster that represented New Zealand in the 2014 FIFA U-20 Women's World Cup, she played matches for her country.

[5] In 2015, she was called to the New Zealand 23-roster that will play in the 2015 FIFA Women's World Cup[1][6] but was an unused substitute.

On October 15, 2023, Millynn completed the Nike Melbourne Marathon, crossing the line with a time of 4:14:23, a valiant effort.

Evie, with the help of friends and family, raised over $4,000 for the New Zealand Leukaemia and Blood Cancer Foundation during the lead up to the Melbourne Marathon.