It was a large hardback colour illustrated book. The story features a boy, a girl and a dog or cat, I think they have to stay inside because it’s raining. I think the girl is trying to scare the boy by telling a story about this witch that snatches children. The witch rides around on a vacuum cleaner like thing I think. I vividly remember the illustrations being the main focus, some taking up the entire page and I think some pages had special printing like glow in the dark patches. I think the girl was emphasising how she wasn’t scared of all these fantastical things going on and I definitely remember at the end of the book she is scared by a spider or mouse.
I read this book as a child, but I can say for certain when, I think the time frame for when the book was released is 1985-2005 though could be earlier. It was in the UK if that makes any difference.
It’s been bothering me a lot because every time I try to search it I end up getting the same results of Badjelly the Witch, Terry Pratchett’s The Witch’s Vacuum, Winnie the Witch, The Wednesday Witch, The Littlest Witch, etc – it isn’t any of these.