In the Ford National Hockey League (NHL), Roberts represented her home region of Wellington as a member of the Capital hockey team.[6] In her ten-year career for the team, Roberts amassed a record 101 appearances.[7]
Aniwaka Roberts made her debut for the Black Sticks in 2012, during a test series against India in Wellington.[3]
Following her debut, she made a string of appearances in the national team before officially being named in the squad. In 2013 however, Roberts suffered a mystery medical condition which impaired her ability to represent the national team.[9] Following a diagnosis of an allergy to shellfish, Roberts returned to her top form and back to the national squad.[10]
2014 and 2015 proved to be Roberts' biggest years in the national team, representing the side at many major tournaments.[11] Her last appearance for the Black Sticks was at the 2014–15 FIH World League Semi-Finals in Antwerp.[11]