With a chance to put the foot on the throat of the Diamonds, and cast some doubt on the future of Lisa Alexander, the Ferns came up with a patchy, inconsistent display. They were careless in possession and particularly struggled on attack. Irene van Dyk (25/29) was shut down for long periods of the second half, leaving Maria Tutaia (20/30) to shoot from distance.
"We missed too many shots [and] we threw the ball away too much," said Taumaunu. "On Sunday we had 13 errors, [last night] we had 29. It was uncharacteristic [and] very rare that we get outshot like that"
The third quarter turned out to be the pivotal period. The Diamonds won that quarter 14-9, which set up the final result.
Bianca Chatfield (three intercepts, four deflections) was immense for the Diamonds and Laura Geitz (four intercepts, six deflections) gained a measure of personal revenge from the first test, where she was replaced at the end of the third quarter.
The Ferns defence toiled well, with Laura Langman and Joline Henry provided a strong shield in front of Leana de Bruin and Casey Kopua. The home side fell down on attack - both Anna Thompson and Courtney Tairi struggled to find space and time, leaving too much of a load on Langman.
The New Zealand side now faces the unenviable task of winning two games across the Tasman to retain the Constellation Cup, as the series heads to Adelaide, followed by matches in Melbourne and Canberra.
"It is not the situation that we wanted to be in," says Ferns' captain Casey Kopua.
"[However] sometimes you need something like this to make yourself look at yourself and as a team. We need to look harder at things."