Why? Where? What?

Olivia is really into the Mr Men and Little Miss books at the moment but she keeps finding flaws in them. Tonight she wanted to know where Mr Strong's hat had gone in the picture. I had absolutely no idea as it wasn't mentioned in any of the text and she wasn't convinced by any of my ideas as to where it had gone. She took the book off me and studied every illustration but didn't find a solution.

It's not the first time this has happened as she seems to be able to pick faults with the illustrations and text in most books that we read. She's got a fair point most of the time but I am rapidly running out of answers for her questions!