Laura now plays her Iowa State University team-mate and golfing buddy Louise Kenney, at whose Dunfermline home she is staying during the championship.
LOUISE KENNEY beat KATRINA MILNE by 4 and 3.
The first four holes were halved in one-under-par figures (both birdied the long second) before Louise took up a lead she would never lose. That was with a birdie at the fifth. A par at the sixth was good enough to put Kenney two up.
Fellow Fifer Katrina scored her first success at the seventh to be back to one down but she then three-putted the eighth to go back to two down and a birdie from Kenney at the ninth put her three up at the turn.
Louise made it four holes won in a row when she parred the 10th and 11th to increase her lead to five.
The 12th was halved in par and the 13th in birdies. Katrine won the 14th but was four down with for to play and a half at the next ended the contest for which Louise was two under par.
ELAINE MOFFAT beat VALERIE MELVIN by one hole.
Valerie Melvin looked to have taken the measure of former champion Elaine when she was three up at the turn and halved the first three holes of the inwared half.
Then local player Elaine won four of the last six holes to turn the tie on its head.
Elaine birdied the 13th to win that hole and then took the 14th with a bogey when Valerie was in even bigger trouble than she was.
The 15th was halved, leave Melvin one up with three to play. But, as Valerie said later, "The 16th was the crucial hole. She drove into a pot bunker while I played for safety off the tee and squared the match after hitting a five-wood pin high."
Elaine struck again with a five-foot putt to win the Road Hole 17th where Valerie took three to get down from the edge.That put Moffat in the lead for the first time and both players three-putted the last green, Valerie's being the shorter putt.
MARTINE POW beat ADDI SHAMASH 4 and 3.
Addi, who had ousted former Scottish and British champion Alison Davidson in the morning, birdied the first hole but Martine hit back with an eagle to square the match at the second.
Shamash's par at the fourth was good enough to win that but Pow then birdied the fifth and parred the sixth to be one up on the seventh tee.
After a couple of halved-in-par holes, Addi birdied the ninth to get back to all square again in a ding-dong tie.
Then Shamash let the tie slip away for her. She three-putted the 10th to lose it and did the same again to go two down at the 11th.
Martine was off and running now and a par at the 12th meant she had won three holes in a row to be three up.
After a half at the 13th, Martine took a stranglehold on the outcome by winning the 14th for a four-hole lead and a half at the next ended the tie.