She finished a whopping three shots ahead of Spain's Marta Sanz and Annie Park of United States.
The Women's British Open is to be played from July 28 to 31 at Woburn Golf and Country Club.
The Indian played solidly on the par-fives with three birdies and an eagle and that set the magnificent round. Her qualification for the British Open also gives her great preparation before the Olympics where the women's competition will be held from August 17 to 20.
"This is going to be my first Major so I'm really looking forward to it," said the 18-year-old Aditi, who got into the qualifier with her ranking of 39th on LET.
In fact, Aditi bogeyed her first hole and was one-over after four holes. She then went on an overdrive with eight birdies and an eagle in the next 14 holes.
"It took me a couple of holes to settle," admitted the Indian who won last year's St Rule Trophy and Ladies' British Amateur Stroke Play Championship before turning professional after winning the Ladies European Tour Lalla Aicha Qualifying School in Morocco.
"After that I made birdie on 12 and 13. I holed a 30-footer on 12th. Hole 13 was another reachable par 5 so I made chip and putt for birdie. I made eagle on par 5 15th with a 3-rescue to 10 feet. Then I hit 8 iron to 5 feet on par 3 16th and made another birdie. I birdied the par 5 17th with a 20-footer from off the green. And I finished by holing a 20-footer on par 4 18th. I played the par 5s well which was the key for me."
