Warriorz won their first game of the season by chasing down Mumbai's previously unblemished 161-6 with 21 balls remaining.
Kiran Navgire hit 57 off 31 balls to give Warriorz a strong start, but England's Issy Wong claimed two wickets in an over to revive Mumbai.
Grace Harris, with 38 not out, and Deepti Sharma's unbeaten 27 secured the deal.
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