Author's Note:
Since so many of you have asked me about it, I decided to clear up some stuff regarding this fic, particularly Hermione's law.
Please note people from the Fan Favorites challenge, this part of the fic does not count into the challenge. Please do not consider it in your evaluation.
At first, all I had as an idea was that Hermione would send Death Eaters and other supporters of the Pureblood agenda to the muggle world in exchange for some of their Azkaban years. But as you guys kept asking about it, I thought about much more, refining the law each time, and this is where it has ended.
The law states that the anti-muggleborn criminals who would be deemed not a significant threat without a wand (Greyback, Bellatrix, etc. do not qualify) will have to spend a predetermined number of years in the muggle world, that can be extended based on further crimes (muggle or magical), to try and teach them that muggles may not be as bad as they have been stereotyped to be (Hermione's noble intentions).
Hermione had been inspired by her internal forgiveness, as well as the newer generation of Slytherins who are not as hard set on muggleborn hating as their parents were (see Draco and Astoria Malfoy).
Umbridge had initially been given a life term by the Gamot, with the added stipulation that she would get chucked into Azkaban if she caused any further trouble, because she was deemed beyond help. But Hermione managed to change it to "until she realizes that muggles are as good as magical people." (a.k.a. never). The Azkaban rule still holds true.
Rita has been given a much shorter sentence, mostly due to public outrage over repeated salacious articles on the Golden Trio, specifically Hermione. It's safe to say Hermione was a little pissed and might have slipped in the info about the animagus.
In Rita's case, she's just exaggerating about her sentence. It's not a life sentence by any means, a few years worst case. (That's basically her job. Exaggerating things to make a scandalous story)
Hope I've cleared some stuff up.