The Indian eves, who had lost the nail-biting first ODI by just one run, defended the 192-run target with quite an ease at the Sir Vivian Richards Stadium on Sunday.
Electing to bat, India didn't have a great start as they lost both their openers -- Priya Punia and Jemimah Rodrigues -- with just 17 runs on the board.
However, Punam then joined forces with skipper Mithali Raj to take the team out of troubled waters. Both shared a 66-run stand before Mithali (40) was caught by Afy Fletcher off the bowling of Sheneta Grimmond.
That did not deter Punam though as she kept on piling runs alongside Harmanpreet Kaur (46) and stitched a 93-run partnership before the latter fell in the 47th over.
In search of quick runs, Punam also lost her wicket, but not before contributing with valuable 77 runs.
In the end, the visitors managed 191/6 in their stipulated quota of 50 overs. Aaliyah Alleyne and Fletcher both picked up two wickets each while Shabika Gajnabi and Grimmond scalped one a piece.
Windies, too, began their chase poorly and lost opener Stacy-Ann King in the fourth over. Wicketkeeper Shemaine Campbelle, who came in next, then shared a 68-run stand with Natasha McLean before the latter retired hurt at her individual score of 15.
Skipper Stafanie Taylor, who was the hero in the first ODI, did try to take the Windies home she could contribute with only 20 runs and was caught in front of the wickets by Poonam Yadav.
Thereafter, none of the West Indies batters could stay long at the crease and wickets kept falling at regular intervals. Campbelle held one end but when she fell at team's score of 100 in the 34th over, the game was all but gone for the hosts. The Windies women ultimately got bowled out for 138 runs in the 48th over.
Rajeshwari Gayakwad, Deepti Sharma and Poonam all picked two-two wickets each and were quite economical as well. Veteran Jhulan Goswami and Shikha Pandey also picked one wicket each and kept a lid on the scoring rate.
With the series level at 1-1, the two teams will now lock horns in the third ODI on Wednesday.
Brief scores: India 191/6 (Punam Raut 77, Harmanpreet Kaur 46; Afy Fletcher 2/32) beat West Indies 138 all out (Shemaine Campbelle 39, Stafanie Taylor 20; Deepti Sharma 2/25) by 53 runs.
Batting first, West Indies were restricted to a measly total of 59/9 in their designated 20 overs on Thursday. Jemimah Rodrigues was unbeaten on 40 as India chased down the total in 16.4 overs for the loss of three wickets.
The West Indies' top order once again failed to capitalise on the powerplay overs as two wickets fell. First to go was Hayley Matthews, who fell for 5, giving Anuja Patil an easy catch off her own bowling after dispatching her for a beautiful boundary through point. Shemaine Campbelle's struggle with the bat continued as she managed a 12-ball 5 before she was LBW. Then came Stacy-Ann King's wicket for 7 in the ninth over. The West Indies were tottering on 27/3 in ten overs.
Chedean Nation and Natasha McLean then started a slow but steady rebuild of the hosts' innings. India started their bowling attack with all spin which pegged the rapid scoring that the West Indies like to do using the pace of the fast bowlers.
The match was paused momentarily as three sets of stadium lights shut off. No overs were lost and it was more of the same on the restart with the West Indies struggling to score against the Indian bowlers.
Nation fell shortly after the match resumed and it was a progressive slide for the hosts who in the end could only muster 59/9 from their 20 overs. Chinelle Henry top-scored with 11 off 18 deliveries while Chedean Nation had 11 from 27. Bowling for India, Radha Yadav had 2/6 from four overs, while Deepti Sharma had 2/12 from her spell.
The Indian Women achieved the target easily despite the loss of three wickets. Hayley Matthews accounted for the unstoppable Shafali Verma getting her stumped for a duck.
Mathews then had Smriti Mandhana brilliantly caught by Shakera Selman in the cover. Harmanpreet Kaur was also caught by Shakera in the deep off the bowling of Afy Fletcher.
But it was all too little too late as a little bit of application from Jemimah and Deepti Sharma helped India over the line.
The fourth T20I will be played on November 17 and the fifth is scheduled for November 20. Both matches will take place at Providence.