The Delhi amateur, along with Kolkata's Neha Tripathi, is in joint lead with identical scores of 144 after 36 holes. The Rs 5 lakh tournament is being played at the Eagleton Golf Resort, on the outskirts of Bengaluru.
Trailing the leaders by just a stroke is Delhi amateur Mehar Atwal, who finished the second round carding one-under 71.
In an event which saw the first under-par scores carded today, Millie held on to her nerve and played the best round carding the days' lowest score of four-under 68.
Her total score of 144 after the second round put her in joint lead with Kolkata's Neha Tripathi. Neha had a disturbing front nine with two continuous bogeys on the eighth and ninth holes.
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She carded another bogey on the 12th hole, but thereafter steadied her game, carding three birdies on the 14th, 16th and 17th holes to return home with a day's score of even-par 72.
Delhi amateur Mehar Atwal is placed third after the second round with a total of 145 after 36 holes. Her round of consisted of four birdies on the fourth, ninth, 15th and 18th holes along with three bogeys on the first, 11th and 13th holes.