I always think there's a great fondness when Pratchett writes about the Chalk though maybe that's because it is obviously modelled on his current home of Wiltshire (if you were in doubt, the appearance of a giant with no trousers clinches it). I think Tiffany Aching has grown up quite considerably from when she first appeared and I wouldn't have automatically said this was a young adult book. Lots of charming, funny and tender moments makes this a fantastic read whatever age you are.