Seegee:
I'm glad Umbridge ended up in Azkaban, but with the new regime would the Dementors still even be a factor?
I sure as hell hope not. Using them as prison guards effectively made Magical Britain a dystopia.
Umbridge was evil, but so are a lot of other people. Normal jail or execution should be just fine for her (I'd support the latter in her case; she was basically a wizard Quisling).