This is so true. Like family films, we write books suitable for kids but aimed at everyone. There is nothing wrong with an adult picking one up and reading it, just like there’s nothing wrong with an adult enjoying Toy Story or Infinity War or Big.
I've said this before, but it still needs saying. The books that we call "children's books" are really books written for an audience that includes children, but excludes no-one. They're books for EVERYONE - not some lesser form of literature, but the most important books of all!