First, she wasn't freed in a one-for-one prisoner exchange, but pardoned by Putin, so she could be included in a larger swap.
In all her efforts, the central theme was her concern about the fate of the remaining POW's (whose release is dragging on because of Kiev's ever-so-changing preconditions). The aim of her trip in December was to visit a number of those prisoners (note, that she was allowed to do so, while nobody else was). She then told their families back home, how they are.
This is good-intended populism at its best.
The fact that she fell out of favour with the crooks and the thieves who came to power in Kiev is not surprising. Nor is her more realistic and factual approach to what is ailing Ukraine.
In one thing she is 100% clear: that Ukraine needs to take care of herself on her own, instead of running around  hat in hand like a beggar.
I call that pragmatism.
Considering, that she appears to be the only one who isn't tainted, maybe this is what Ukraine needs.