Sri Lanka in the final ODI on Thursday to complete a 3-0 rout. Harmanpreet (75 off 88 balls and 1/21 in 5 overs) and Vastrakar (56 not out off 65 balls, and 2/32) first bailed the team out with a 97-run seventh wicket stand that ensured a decent total of 255 for 9 for the visitors.
The bowlers then executed the plans perfectly to shoot out the hosts for 216 in 47.3 overs with both Harmanpreet and Vastrakar chipping in with crucial breakthroughs.
With this series win, the Indian women clinched their fourth consecutive bilateral series victory against the island nation.
The women's side had earlier won ODI series in 2013, 2015, and 2018. Having already sealed a series win, Harmanpreet's unit came into the final game as a confident bunch, something which the Lankans distinctly lacked from the very onset.