I love you. You so very nailed Granny's voice and Terry's narrative style. I cried, I was laughing so hard.
However, the prudent thing was to civilize them first. Because she didn't even want to imagine how big an explosion a place full of wizards could make if they got their hands on an overgrown boy with no upbringing and a knack for engines.
Oh, Loz. I get the feeling you and the boys in the High Energy building would get along like a house on fire, in the sense that there would be significant property damage and possible casualties.