Nalini, who is still looking for her first win of the season despite having come close to it more than once, is three clear of veteran Smriti Mehra who has already won twice in first four legs.
Neha Tripathi and Saaniya Sharma, also winless this year, are tied for third at 74 each, while Vani Kapoor struggled on the back nine with four bogeys in her 76 that put her in fifth place. Shraddhanjali Singh (77) completed the top-six.
Nalini, who led for two rounds before being overtaken in the final round by experienced Smriti in Srinagar last week, had two birdies in first three holes on first and third.
She was steady with pars till the 12th, where she dropped her lone bogey of the day. A birdie on par-5 14th brought her back to two-under and she stayed there.
Smriti with a bogey on second and seventh and a birdie on third turned in one-over. A double bogey on 14th and a bogey on 16th put her at three-over, but the experienced Smriti turned the situation around with great birdies on 17th and 18th to stay in touch with the leader.
Neha had just one birdie against three bogeys in her 74 and Saaniya after three bogeys had to wait till the 18th for her only birdie.
Vani bogeyed the second and then 10th. But three bogeys in a row from 14th to 16th saw her at five-over before a birdie on 18th gave her some consolation in a round of 76.