On a long day, when all the contestants had to play their second round in the morning session and the quarter-final matches in the afternoon, Diksha shone out as a solid player.
Diksha scored two emphatic wins during the day. She outplayed Amanda Tan of Singapore 4&2, finishing the match on the 14th hole, and then finished the quarter final even faster on the 13th hole at 6&5 eliminating fellow Indian Gauri Karhade.
The 15-year-old Class X student, Diksha, has won four of the eight tournaments she has played this season and finished second in two others.
India's other leading contender, Seher Atwal was taken to the 21st hole before prevailing over Sifat Sagoo. In the quarters, Seher was beaten by Chinese Taipei's Tsai Wei Cha 3&1. Tsai Wei earlier defeated Dolma Rawat.
Ireland's Maria Dunne beat Geraldine Wong 2&1 and then went the full distance against Sifat Alag before winning 1-Up on the 18th.
The semi-finals tomorrow will see Diksha Dagar tee-off against Tsai Wei Chia, while Nur Durriah Damian will be up against Maria Dunne.