Birdie boost puts Carly Booth in running
The Comrie 18-year-old's four birdie round put her on one over par and into a tie for tenth place with 18 holes to play.
England's Holly Atchison stayed on course for a first professional victory with a second round 71 for a six under par total.
New Zealand veteran Lynnette Brooky was in second place on four under after a 69. Kylie Walker, six over par, was the only other Scot to survive the cut.