And here I am at the end of what you have. Probably going to leave SE alone for several months now because I find it so much more satisfying to read many pages at once compared to one at a time. Thanks for sticking with this and continuing to work on it! I admire consistency - or at least continuous effort - with story creation.
She had been there for a couple months before catching the necrosis.
The deterioration speed is pretty accurate. According to Wiki and the medical articles I read, this bacteria as nasty fast-moving. They suggest that all those infected get to a hospital 24-36 hours after contracting it (that is, if you suspect that's what you have) before any real damage is done. After that they have to start cutting.
You're welcome!! Every time I bring up a real-world disease, I try to make it as realistic as possible. I also study the psychological effects that having these illnesses can cause.
There's only one made-up illness in SE (Brymer's disease from the prologue - it comes up a lot later) and I tried to make it something that COULD exist in real life. I'm sure the medical buffs will get on my ass about how it's impossible, but that's okay.