Briar Cloake finished with 3-64 from her 10 overs, including getting both Hawke's Bay openers, while captain Esther Lanser took off the keeper's gloves to bowl a restricting 1-25 from her quota.
In reply, Wanganui collapsed to 22-4, as White Fern Abby Burrows ripped through them with her right arm mediums, taking 3-3 from five overs.
Only Jessica Watkin could hold her ground as the other end of the crease resembled an express lane 51-7 became 53-8 with her departure after scoring 30 runs, over half the final total.
Six of the players lost their stumps as Rangi cashed in with some tight line-and-length finishing with figures of 4-8 as a good catch was made off her bowling to snaffle the last Wanganui wicket.
Coach Dilan Raj said the side will be strengthened with the return of other players.