The victory is Arnold's first NSW State title after three attempts.

"This is my third attempt. I came fourth last year, so it's nice to have this one," Arnold said. "It's my first home state title. I really wanted to win this one."

Despite her dominant victory margin, Arnold's final round was a mix of steady, mistake-free golf rather than spectacular scoring, saying her win was more about consistent ball-striking and course management. She added the pressure of leading from start to finish was also present and something she worked hard to deal with.

"I played solid but no birdies," Arnold said. "I drove it nice and hit some really good iron shots but just couldn't get the putter started."

"I was a little bit nervous this morning - but I took a few deep breaths and played it one shot at a time. It's a challenge to lead all the way. I wasn't trying to think about it, or get too far ahead of myself."

"I just tried to stay relaxed," she explained.

Arnold said her preparation for the championship required careful time management as she balanced her golf with work commitments.

"I’ve got two jobs these days, one in the pro shop at the Coast Golf Club, and the other with the Golfer Tour, plus doing events, so I had to do a bit of juggling to practice for this," she explained.

The victory has some added family significance, with Arnold's two professional golfer brothers, Jamie and Scott, both having had storied amateur careers. But rather than feeling overshadowed by their achievements, Arnold said she has found peace with her approach to the game.

"They'll be happy for me," she said. "I used to feel a bit of pressure having brothers as professionals, but in the past couple of years, I've calmed down a lot and just accepted I'm never going to be a pro and I'm not playing for money. It's more stress-free."

Final Scores:

1 Ashleigh Arnold (Bonnie Doon) +13

2 Dianne Benghamy (Queensland) +18

3 Kacey Heywood (Victoria/Bendigo) +26

4 Adele Dosen (Bonville) +31

5 Helen Haynes (Hawks Nest) +35