Actually I will say here that 143 run in 29 over wasn't a good amount but here I will say that the Indian women team played this match as a ODI match in that format and also their plan was also plan according to ODI so here I would say that they could take more run if it doesn't happened by rain.
And at the same time I think England women's team got time to give their team the kind of mindset they take for a T20 match and as a result they were able to win this match easily.
And for that I think in most cases in the DLS method in the rain the team batting later always has a better chance of winning. And thats really happened in this match.
The match was reduced twice, once from 50 overs to 29 overs and the second time due to rain delay, it was reduced to 24 overs. In this case, England's target was 121 runs in 24 overs, which was an easy target for England. And England Women's team did just that, defeating Indian Women's team by a big margin of eight wickets and leveling the series 1-1.