in 2014 cocksedge started in all nine matches for the canterbury women's provincial team, performing strongly and scoring 101 points. following this cocksedge made her test debut for new zealand and was named in the squad to the 2014 women's rugby world cup. in 2015, she was top point scorer with 26 points at the 2015 women's rugby super series. she was named new zealand's women's player of the year at the end of 2015 and went on to be named in the 2017 women's rugby world cup squad that won the tournament. in 2019 she was part of the winning team of the women's super rugby series.