WHS would not take their foot off the throat three times in the opening quarter they coughed up the ball, only to immediately bolt back and regain it within seconds before Kaierau could even clear their midcourt.
Kuruyabaki and goal defence Ngaere Chambers doubled up on Kaierau shooter Jackie Abraham, leaving Kaierau's captain courageous Rachael Lynch to once again try to save the situation.
But this time Lynch could not deliver some nervous early misses being compounded by WHS smothering all the angles with Kuruyabaki at one point leaping clear across the circle to pluck an attempted goal clean out of mid-air.
Lynch subbed out for the final quarter, although she returned at wing attack, but from start to finish this was not their night.
WHS didn't even lose stride when wing defence Blanch Cloete limped off after a heavy spill in the second quarter, with Pahia Tamati a more than adequate replacement.
Kaierau centre Kate Hutchings never slowed down, but the trouble was that, on this night, Brodie Flower and a host of others could keep up with her.
For delighted WHS coach Lisa Murphy, it was as clinical a performance as one could hope for in a high pressure playoff.
"Absolutely wonderful, they did everything I wanted them to do. I couldn't ask for anything better."
The backbreaker was the opening three minutes of the second quarter Kuruyabaki and Hefferman broke Kaierau's chain passing, and pressured their older opponents into uncharacteristic lapses.
Given the weight of possession, the Murphys made every shot count and 13-9 blew out to 19-9 and had Kaierau scrambling for a timeout.
It didn't get any better as Horrocks refused to let Kaierau find their rhythm coming forward or going back she was up for the steal.
Sammy Murphy was calm all night while Ashlee nailed a couple of good field goals.
Never giving up, Kaierau's best phases came through the middle portions of the final quarter putting up four straight goals themselves, but the die was already cast on who was getting which-coloured medal.
In the playoff for third/fourth, Nga Tawa A got a bit of consolation after their heartbreaking loss in the semifinal the week before, seeing off 2013's newcomers East Club Sportsedge A1 53-47.
Leading by six goals at quarter time, Nga Tawa extended their advantage through each phase to finish in the bronze position for the season.
By the numbers
Wanganui High School vs Kaierau A
Final score breakdown
QT: 13-9
HT: 27-16 (14-7)
3QT: 44-27 (17-11)
Final: 56-38 (12-11)