Saroha, who turns 17 later this month, finished with a total of 225, three clear of Gurbani Singh (75) who aggregated 228.
This was Millie's second win after her success at the Northern India Ladies event. She was third at the Eastern event.
Ridhima Dilawari, who led in the first two rounds, crumbled under pressure on the final day and ended with a score of 83 to drop to third at 230.
Raksha Phadke (78) at 231, Ankita Kedalya (79) at 233 and Seher Atwal (80) at 236 took the fourth to sixth spots.
Millie, starting the day five shots behind overnight leader Ridhima, opened with a birdie on the first and played her front nine in one-over 36.
On the back nine she even very steady with one birdie on 11th and pars all the way till the 18th. There the tension got the better of her and she double bogeyed the closing par-5 18th. But she could afford that as Gurbani was way behind.
Gurbani, who played the front nine in three-over 38, double bogeyed the last and ended second. Gurbani, who was second, has won three titles this season. More
