The Charissa Barham-coached All In side did well to exchange tit-for-tat goals in the first couple of minutes but Kupa, with co-coach Jewels Falcon on the bench, ensured Otane kept the pressure on their rivals to unravel cracks.
Unforced errors crept in, gaps started opening and All In began suffering from blurred vision as their passes were snaffled at will.
Otane didn't ease their foot off All In's throat in the second quarter, winning that 16-11 to go into halftime 33-22 up.
The Candis Timms-captained All In didn't lack heart but certainly lacked composure in doing the basics their coach had talked about in the build up to the game.
Conversely the Briar Chalmers-skippered Green Machine had an air of invincibility about them.
Their passes stuck like Velcro, the cohesiveness and movement on court was simply poetry in motion and they seemed to have all the time in the world to find each other.
Otane appeared to have an extra player looming unmarked on the fringes while their goal defence, Chalmers, and goal keep Alex Balhorn made life uncomfortable for goal shoot Imke Kitchin and goal attack Jemma Kendon.
"I just think it came down to our team unity and playing for each other," she said, before revealing during the presentation ceremony that Otane was unsure of fielding a team this season after the two schoolgirl teams were included in the competition.
Perhaps another indicator of that authority on court was the champions sticking to their starting line up through every quarter while All In made a flurry of changes from the first spell.
"We thought about some changes, actually. But it was working for us so we thought why change it when it is working.
"This is where sometimes coaches go wrong. They make changes where they don't need to be made so we just believed in the team out there."
Asked how they would celebrate, Kupa, speaking for herself, said crawling into the bed for some rest.
"We're really proud of the girls and we walked the talk all season.
"When people start to take the team down with all sorts of comments we just didn't listen to them and focused on our own game."
Barham and her assistant, Adrienne Morrin, slipped bibs for Timms from centre to wing attack before returning her to her starting post.
Deanna Muir, who had come off the bench to assume the mantle of centre, slipped on the wing defence bib in the final quarter.
In the third quarter, schoolgirl Kendon came in at goal attack as Natalie Brown went to goal defence after starting as goal keep.
Angela Stubbs shifted to wing attack, Timms back to centre and Sonee-Lee Waerea shuffled back to goal keep.
All In came back 17-13 in the third quarter but were playing catch-up netball by that stage as Otane maintained a 10-plus margin with the score at 46-35.
"It was the cliche of a game of two halves, wasn't it?" a smiling Barham lamented. "That 11-goal difference at halftime was bloody hard to pull back."
However, she saluted her charges' steely resolve to come back in the second spell rather than just rolling over to expose their underbelly.
"Finals netball is about momentum and we lost a bit of it in the first half but we managed to find it again in the second half so that's a little unusual."
Reflecting on the shuffling of her players, Barham said she didn't have too many bodies on the bench.
"A slow start in a final is never good but we had two 15-year-olds out there."
She took immense pleasure in watching Kitchin play "the best game I've seen her play".
Barham says with time and development the young should blossom into awesome players.
"It was a bloody awesome game so it's time for some wine."
Napier Girls' High School Senior A beat Hastings High School Old Girls' Proactive Huias 42-39 in the playoff for 3rd/4th last night.
Janaya Preece shot 77 per cent and Janayah Lewis wasn't far behind with 76 for NGHS while Laike Baker managed 67 per cent in the circle.
For Huias, Judy Brown took a game-high 93 per cent but Rebecca van Rooyen managed only 14 per cent.
