Bangladesh's women's team is very weak. Especially their batting line-up is weak. And so they are not able to play well. In the first match, the Bangladesh women's team lost all wickets for just 32 runs. And so New Zealand Women's team will not have any problem winning the ODI series. I think the New Zealand team will win all three ODI matches in the series. 250 runs is enough to win on such a pitch. But the batsmen of Bangladesh do not have the ability to collect 250 runs against the bowlers of New Zealand.
No need to write them (Bangladesh) off completely. Two matches remain in this series, to be played at Napier and Hamilton. By now Bangladeshi players might have got an idea about the pitch conditions and weather patterns. And although the T20I series was won 3-0 by New Zealand, there were some noticeable performances from the Bangladeshi women. Batting was a complete failure and I don't even want to mention about it here (in one of the matches they were bowled out for a total of 32 runs). But in the bowling department, Marufa Akter and Ritu Moni have performed credibly.