How very, very Granny Weatherwax of you, Alice. You haven't explicitly
said that you are thousands of years old. You just
implied it and let Gavia's imagination do the rest.
Being a 'witch' was a dodge, not an explanation. We still don't know how Alice does what she does. She's denied by implication having nanotech but she strikes me as the sort who can lie without a twitch, so we can't really be sure of much she says,
especially about herself!
So, we finally get a (vague) answer on who Alice is. But the real question, which I've been wondering for most of these last two chapters, is still whose story is this, anyway?
Mostly, I think that it will be answering the mystery that is Alice. I suspect that, like Granny in the Discworld books, she
likes being the mysterious, morally ambiguous 'Wicked Witch'. What this will be will very much a journey in which we discover that she is very much a good person and a hero. It's just that being a hero is just a lot harder with far more challenging decisions than we see in the funny papers. Alice would prefer being an anti-hero or even an anti-villain; she will always deny being a good guy, but those who know and love her know the truth (and occasionally have to hit her upside the head to stop her sulking about it).
I also have the feeling that Gavia is becoming more and more prominent in the narrative. I'm starting to think that she is like that spectacularly talented witch that the Lancre Three met in a recent book (I think it was called
Black Hat). Alice is going to teach her how best to use her powers and, more importantly, when
not to use them (i.e. 'most of the time'). The B-plot could be titled: "How I Became a Witch by Gavia Vicissitude". Alice doesn't
want an apprentice; actually there is, according to her, nothing that she wants
less! However, the girl is just too powerful and talented to leave untrained!
There may be a C-plot about Ardent's learning curve and how he grew up to be a conscientious and mature man.