The annual knockout tournament is open to all the singles scratch champions from the previous year at all golf clubs around Bucks, and Kozlowki entered by virtue of doing so at Ellesborough.
The 20 year former Misbourne School pupil got a bye in the first round before beating Stowe's Mo Dawson in the second round back in June.
She went on to also knock out Buckingham's Bernie Howe in August's third round and Stoke Park's Thalia Kirby in September's semi-final, before finally beating Gillian Kinnear, of Gerrards Cross, in last week's final at Lambourne.
Ironically, she went further in the competition than her good friend, fellow Prestwood golfer and losing semi-finalist Charlotte West, who was representing Harewood Downs).
But whereas West has set herself a target of turning professional by next summer, Kozlowki, despite playing off two, has already decided she is not good enough to take up the game full time.
Instead, she is taking a sports management degree at Bournemouth University, which is currently sitting the second year of, and hopes to work within the industry.
Kozlowki has been playing golf since the age of 11, after taking up an offer for lessons for girls at Ellesborough, where her father already played.
Meanwhile, played on the same day at Lambourne was the final of the BCLGA's Summer Greensomes, which was won by Sandra Lacey and Rachel Mistri of Chartidge House, in Chesham, who beat Denham's Kathryn Connolly and Diane Wilson.