"I've got to try and take the positives from it", said the 38-year-old South Australian.
Celine Boutier of France finished two in front of her nearest challengers.
Overnight leader Kim Kaufman of America faded to finish eighth.
Paul Lawrie protégé Law felt right at home in the conditions. But no, I'm super excited with the way I handled myself.
Thomas, on her LPGA debut and with her brother carrying her bags, fired a 69 while Su recovered from a bogey on the 17th with a birdie on the 18th to ensure she ended in a tie for second. With a pump of her fist, she clearly knew that it was a major moment. We played alternate groups, it was good to catch-up with a lot of girls I grew up playing golf with as well. Playing in the day's second group, the 33-year-old from New South Wales bounced back from an opening double-bogey to absolutely blitz her way around the Beach Course.
"It was a insane day", said Kemp.
She holed further birdies at the ninth and 13th before a double-bogey at the 14th tarnished her scorecard.
King blocks Thai princess' prime minister bid; pressure mounts to dissolve party
The party could be banned from the March 24 election after an activist said he would file a petition seeking its dissolution. Thai Raksa Chart's Executive Chairman Chaturon Chaisaeng declined to comment on Sunday on the request to disband the party.
Fitbit has launched two fitness trackers but you can't buy them
The images reveal the fitness tracker in Pink and Blue color options and are expected to offer more options when it is unveiled. The new models were not released with much attention, so it's unclear when exactly the trackers became available .
Iran: Islamic revolution’s 40th anniversary commemorated, crowds chant ‘Death to America’
There's also a huge display of domestically-developed military equipment, including drones, missiles, bombs, and weapons. State TV showed crowds defying rainy weather and carrying Iranian flags while shouting anti-Israeli and anti-US slogans.
"It was one of those days you nearly can't remember what happened", said Kemp, who knocked in five consecutive birdies at Nos. 4-8. "Just stuck to my game plan out there", he added. I tried to stay patient.
Around the same time a huge roar reverberated around the Barwon Heads links and it was a Scot who had caused it. David Law, 27, is an unheralded player in this part of the world, having spent five years on the secondary Challenge Tour trying to find his way on to the main European Tour.
A 30-foot birdie at the 15th hole proved decisive for Boutier, pulling her two strokes clear and allowing her the relative luxury of making par for the win on eight-under-par 281 total.
The American then holed a hard birdie from the front bunker at the short par-three seventh - known locally as "the postage stamp" after the famous par-three at Royal Troon Golf Club in Scotland - to regain control.
"I've been loving the four events I've played so far and to just be a European Tour player was what I was happy with".
He tweeted: "The work we do @paullawriefound is not to raise golfers to win on tour but when one of our kids does win on tour which happened today it's an awesome feeling".
Through the first two events of the LPGA season, 21 players have top-10 finishes, led by Diamond Resorts Tournament of Champions victor Eun-Hee Ji and ISPS Handa Vic Open victor Celine Boutier.