I agree.... however, if you deemed a response of some kind was needed, it doesn't mean you need to answer the questions.I have not read to the end yet, but if I were you I would just not even acknowledge that email. Screw her.
Also, maybe I'm old-school in this way, or potentially just old, but if she's having a soul-searching kind of moment (which is not your responsibility, anyway) I personally would respect that more if that's done in person. If it was an option, intention made clear, amicable and such. Otherwise you could both also end up in a back-and-forth over email. I'd be for verbal dialogue, with the benefit of tone and such, too. Anyway, I'm not suggesting you offer that to her.