The 21-year-old is at Kooyonga Golf Club for one reason only - to secure her first national title and fourth LPGA Tour victory.
"My goal, I think is to win," Lee said.
"I don't think anybody comes into a tournament not wanting to win. It would be great if I could do it. At this point I think everybody is my rival. So many top players are here and the game’s so competitive."
The Western Australian carries red-hot form with her to South Australia, runner up behind Jiyai Shin at last week's Canberra Classic and and a class above two weeks ago when she captured her second Vic Open.
Lee's blistering start to 2018 came off the back of a six-week break from golf that allowed her to step away from her clubs and recharge.
Minjee Lee during Tuesday practice at Kooyonga Golf Club.
"I think all of us need a break during Christmas and New Year’s," she said.
"I took three weeks off with no golf clubs, so that was nice. I got to do what normal people do on holidays. That was good and then I got to train, and I felt great training."
The World No. 16 said she's never played Kooyonga prior to this week and her on-course preparation has been light with nine holes on Monday and a further nine holes today.
Lee has twice finished inside the top 10 at her national championship - T7 at Royal Melbourne in 2015 and T3 last year at Royal Adelaide - but in neither of those years did she bring the sort of lead-up form she has with her this week.
"I think pressure-wise, I think you put more on yourself because you have such high expectations competing in your home country and it’s your national title. I think probably the expectation is the pressure," she said.
"I had two great tournaments prior to this week, so I’m feeling pretty solid in all parts of my game, so I think it was great preparation."
Beyond a victory this week, Lee is eyeing a place inside the world's top 10 for the first time in her career.
"I’d like to get into the top 10 world ranking but I have my process goals."
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