Of the later Discworld books, I like the ones about Tiffany Aching best because their stories arise from the characters and the natural interactions that flow from their natures as Pratchett has described them. Naturally there is the overarching theme of Tiffany growing up — and in Wintersmith her precociousness is easier for me to accept in an almost thirteen-year-old than it was in the much younger Tiffany of The Wee Free Men — and there is also a plot device to get the story rolling, but mostly Wintersmith is about he characters being who they are and becoming who they ought to be. Even the antagonist means well.
Tiffany has gone from her home area, the Chalk, up to the Lancre mountains to learn from the region’s witches by living with them and observing what they do, how they perform the role, how they relate to one another. A younger witch stays with an older one for a period, learning what she can, before moving on. Eventually, an older witch will pass away, opening up a cottage for one of the younger ones to take on and settle down more or less permanently. The witches perform medical and magical services for the people they live among, dispensing assistance and sometimes justice. The communities respect the witches and provide for them; the witches also visit one another quite a bit.
In those times when people hated witches, they were often accused of talking to their cats. Of course they talked to their cats. After three weeks without an intelligent conversation that wasn’t about cows, you’d talk to the wall. And that was an early sign of cackling.
“Cackling,” to a witch, didn’t just mean nasty laughter. It meant your mind drifting away from its anchor. It meant you losing your grip. It meant loneliness and hard work and responsibility and other people’s problems driving you crazy a little bit at a time until you thought it was normal to stop washing and wear a kettle on your head. It meant you thinking that the fact you knew more than anyone else in your village made you better than them. It meant thinking that right and wrong were negotiable. And, in the end, it meant you “going to the dark,” as the witches said. That was a bad road. At the end of that road were poisoned spinning-wheels and gingerbread cottages. (p. 20)