The Fire were dominant with bat and ball, with captain Georgia Redmayne carrying her bat for an unbeaten 134 not out, before Queensland’s slow bowlers silenced the passionate Junction Oval crowd.
Queensland’s total of 8-317 was the second time the Fire had gone past 300 during the season, and their bowlers then dismissed Victoria for 205 to record a 112-run victory.
Spinners Grace Harris (4-35) and second-gamer Lilly Mills (3-36) proved decisive, with young seamer Courtney Sippel finishing with 3-44.
Queensland received the Ruth Preddy Cup for the first time, winning the title after finishing as runners-up on five previous occasions.
It makes two years in a row that the winners have claimed their State’s inaugural title with WA winning last summer, meaning only Tasmania and the ACT are yet to win the WNCL.
It was Queensland’s second ever trophy, with the 2013-14 WT20 title their only national championship win since they began competing on the national stage in the 1930s.
The victory was even more remarkable with the team having to undergo emergency COVID tests last night and then return negative results before being able to start the game the day.
Results were received by 7am, with the team heading to the ground only to have the starting time delayed due to morning rain.
Victoria won the toss and sent the visitors in, but the Fire got away to an ideal start when play finally started with Year 12 student Georgia Voll hitting 34 from 39 balls.
Player of the match Redmayne proved to be the rock once again for Queensland, making up for the absence of national players in regular captain Jess Jonassen and batting star Beth Mooney.
Her match, and season, was exceptional. She claimed four dismissals today with the gloves on top of her unbeaten ton, which was her second century of the season and also included two scores in the 90s.
She finished the season with 531 runs at 132.75.

As well as Redmayne, middle order bat Mikayla Hinkley was impressive, producing her top score of the season with a run-a-ball 53 that came at a crucial part of the innings.
Seamer Meagan Dixon put the icing on the batting cake with a late flurry to hit 23 from 12 balls before Redmayne finished the innings emphatically with a string of boundaries.

The victory caps off an outstanding three years for women's cricket in Queensland, with the WBBL Brisbane Heat winning back-to-back rebel Women's Big Bash League titles before finishing third earlier this season and the Fire winning their inaugural WNCL championship