With their second successive win against India, the hosts lead 2-0 in the five-match series.
Put into bat, India began well with openers Jaya Sharma and Karuna Jain (17) taking the score to 57 when the former fell to Anna Dodd (2/19) and thereafter India lost wickets at regular intervals.
Captain Mithali Raj (23) and seasoned Anjum Chopra (14) threw their wickets despite looking good while Rumeli Dhar (11) and Jhulan Goswami (23) proved poor judge of the run and were both run out. India scored 157 for seven in their stipulated 50 overs.
Chasing a victory target of 158, New Zealand received an early jolt when Goswami (1/18) removed opener RJ Rolls (12) but that saw Tiffen taking guard and she looked in a belligerent mood in his 90-minute stay in the crease during which she faced 61 balls to score a quick 66 that included six hits to the fence.
She eventually fell to Devika Palshikar (2/25) while trying to step out and hit her out of the ground and miss the ball. Karuna did a smart job behind the stumps but at that stage, the Kiwis needed just one run to seal the match and they did it in style. New Zealand reached 158 in just 28.2 overs, losing half of their wickets.