Ah, I don't see anything wrong with it.
As long as you are not like living your book, or anything, and it's not about stalking - laughs. That would be creepy then...
But most authors, and children's authors, are adults. Stephany Meyer wrote Twilight and is an adult. She's 38 I believe, with 2 kids.
Our ages here range from 22-45 at the moment. And the brain never ages. We all seem to agree that it picks a spot in years(certain age) and decides to stay there, even as time marches on. We just always think of ourselves that way. We don't picture getting older until faced with a mirror at times.
Who exactly does this 'friend' thinks writes all these books? JK Rowling is in her 40's... It takes time to write and get published, even if a teen like Chris Paolini does write something - so they probably won't be a teen anymore, by the time it is on shelves. Hope that helps...![]()