It can certainly happen that characters in more sophisticated stories can "take over" as they develop and change the author's original ideas. Well, it certainly happens to me at times.
Margaret MahyAnyone interested in the world generally can't help being interested in young adult culture - in the music, the bands, the books, the fashions, and the way in which the young adult community develops its own language.
Margaret MahyWriting for young children I find I often use particular jokes with words and exaggerated, funny events, but some of these haunt the more complex stories for older children too.
Margaret Mahy