Kammala jumla mai zuwa: A ranar 15 ga Fabrairun 2014, a gasar cin kofin mata ta Amurka, Nievas ta dauki nauyin wasan tsakanin Australia da China. Wannan ita ce wasan farko da take jagoranta a gasar Rugby ta Duniya ta Mata Bakwai. A ranar 30 ga Nuwamba 2017 a gasar Dubai ta Mata bakwai ta dauki nauyin wasan tsakanin Rasha da Ingila. Wannan shi ne wasan ta na 100 na Rugby Women's Sevens Series. A shekarar 2014 Nievas ta fara fitowa a matsayin alkalin wasa na kasa da kasa a wasan mata goma sha biyar lokacin da ta dauki nauyin wasan tsakanin New Zealand da Samoa a Eden Park. Daga baya ta yi hukunci a wasanni a Gasar Mata ta Kasashe shida da kuma a duka 2014 da
Gasar Kofin Duniya ta Mata ta Rugby ta 2017. Ta kuma yi hukunci a wasan karshe na mata a wasannin Olympics na bazara na 2016.