A frying pan is a good substitute for a bopping wand.*Nod*
Not his best, but you should ALWAYS read more Pratchett. I'm rereading the Tiffany Aching books right now. Based on your own writing in this thread, I think you would really, really appreciate them. Especially "Wee Free Men". Tiffany Aching may be Pratchett's young adult series, but that doesn't stop it from being deep and side splittingly, hilariously funny. Tiffany actually reminds me more than a bit of your version of Ami. She doesn't have a goddamn princess wand, though. She's a witch. She's got a hat, a frying pan, and more than second thoughts.
Hmm... I deliberately stopped reading Discworld after 3-4 books to avoid the inevitable decline in a long series. That was 20 years ago. It would appear from all OM evidence that I was in error. DOH!