 Kopua ave ari nhengo yeNew Zealand national netball team kubvira 2004, achiita mutambo wake wekutanga pagedhi muna 2005 vachirwisa Barbados. Akatambawo muNew Zealand U21 netball team iyo yakakunda ndarama pa2005 World Youth Netball Championships muFlorida. Munguva yebasa rake akahwina menduru dzegoridhe pa2006 na2010 Commonwealth Games uye 2009 World Netball Series, uye menduru dzesirivheri pa2007 na2011Makwikwi Enyika eNetball. Muna 2008, iye co-vakaputeni chikwata pamwe Laura Langman, achifambira kupinda basa achiita kaputeni gare gare kuti gore vachitevera kukuvara kuna Julie Seymour. Muna Chikunguru 2009, Kopua akazova kaputeni wechi23 weSilver Ferns, achitora chinzvimbo kubva kuna Seymour uyo akasiya mutambo. 