Defender Lucy Tui, 17, was named the team's Most Valuable Player for the tournament, being chosen by both Mallinder and anonymous vote by the team.
After beating Bay of Plenty 7-0 in their opening match last Monday, Wanganui suffered disappointing losses to Waikato (3-2) and Hawkes Bay (1-0) to miss the Top 8 playoffs.
They rebounded to beat Tasman 2-0 and then Southern - a combination of Otago and Southland - 3-1 to make Saturday's 9th/10th final with Taranaki.
The sizeable majority of the team play for Collegians in the Manawatu League, so their Saturday game with the High School Hockey Club Rebels was deferred.
Mallinder said they were likely to play the crucial matchup this coming Sunday evening, following their regular game with College on Saturday, as they need the win over HSHC Rebels to give themselves a chance at the Top 4.
"I think we'll be quite solid for that."