The 20-year-old Indian, who has missed only three cuts in 13 starts this season, shot one-under 71 yesterday for a total of 12-under 276.
Aditi had a total of five birdies, two bogeys and a double in her 71.
But Aditi's total of 12-under was 19 shots behind Sei Young Kim, whose final round seven-under 65 saw her post a record total of 31-under 257.
Kim shattered the 72-hole scoring record, which she previously owned along with Annika Sorenstam, who totaled a 27-under in 2001.
Kim, 25, played the finest four round stretch in the history of the LPGA and shot
63-65-64-65. She was streets ahead of the field as she won by nine shots with Carlota Ciganda in second spot at 22-under while Anna Nordqvist, Emma Talley and Amy Yang were tied for third at 20-under.
Aditi, starting the final from 11-under, birdied three times yesterday on first, third and sixth, raising visions of a good finish.
But she dropped shots on eighth and ninth before a stretch of pars. A birdie on 15th saw her still at 13-under, but a double bogey on par-3 17th dropped her down before she finished with a birdie on 18th.
Aditi dropped shots on 17th in the first and second rounds too.
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