Earlier this year, Luck, from the Cottesloe Golf Club but also a recently joined member of the Royal Perth Golf Club, won the NSW Strokeplay Championships soon after finishing runner-up to New Zealander Tae Koh at the Australian Amateur Championship.
Luck was also the medallist in qualifying earlier in the week.
Luck defeated NSW's teenager Cameron Davis in what was a close fought match early but one which Luck dominated over the last 27 holes.
"I wouldn't say it's the biggest event for me of the year because the Aussie Amateur is an incredibly strong field and to make it to the final is a big deal," said Luck. "But it's a great win to win at home in WA, first state amateur title and hopefully I get to play a few more and have at them. It's definitely important to me and it's a great achievement when you consider who has won it like Brett Rumford and Greg Chalmers."
Bettencourt, from the Mandurah Golf Club, had a much tougher match against her fellow finalist, Mount Lawley's Hannah Green, before winning one up, staging a remarkable comeback from a four hole deficit at lunch to win at the 36th hole.
Bettencourt had the added advantage of touring professional Kristie Smith, a former WA and Australian Amateur Champion, on the bag today.