"I had faith that the girls could do it."
Iona won their final against Hamilton Girls' High 2-0 after a tense semifinal with Te Kura Kaupapa Maori o Raumata which they won 5-2.
Iona's Bella Greig was the leading goal scorer, putting 10 in the back of the net. Collin wasn't far behind with five.
The side also experienced success earlier in the year, holding Napier Girls' High to a draw in the final of the Hawke's Bay competition.
"This year has definitely been my biggest highlight."
The side is riddled with representatives.
Team members Millie Long, Olivia Mcleod and captain Collin will be part of the Queensland Australia Challenge in Napier later this month.
Hannah Mason was selected in the Hawke's Bay under-18 women's team while several members are part of the Hawke's Bay under-15 side.
Collin said her team's success would not be possible had it not been for coach Karen Holder.
"I can't thank Mrs Holder enough for everything she has done for this team, and wish the girls all the luck for the future."
She plans to continue playing hockey when she moves to Massey University in Palmerston North next year.