The home side had nine goals before the South Africans opened their account but the visitors gradually gained some parity as their obvious nerves settles down. Their shooters let the side down though, with a poor 50 percent success rate against the 86 percent generated by Irene van Dyk and Maria Tutaia.
Up 18-5 after the first quarter, the unbackable crowd favourites took control of every aspect of the game and gave the South Africans little time to settle with the possession they did manage to get. Both teams tightened their defensive pressure in the second period, which led to the rare sight of van Dyke missing two shots in the quarter, but at halftime the Silver Ferns had a 12-goal advantage leading 31-10.
Coach Waimarama Taumaunu replaced her first choice shooters after the break with Jodi Brown and Cathrine Latu, and former South African rep Leana de Bruin came on for her 99th international cap.
Captain Williams brought the biggest roars from the boisterous home crowd with a few of her signature lightning-quick intercepts and her team eased away in the third quarter even further to start the final 15 minutes leading 47-15.
Another newcomer to the Silver Ferns this series, Bailey Mes, stood out in the final stanza, showing plenty of aggression and determination at WA, and along with Cullen looks to be an outstanding long term prospect.
The Silver Ferns ended with a rousing finish, with Latu and Brown combining sweetly as the scoreline ballooned out to 63-24 at the final whistle.