If you hadn't been an author, what would you have been?
An opera singer.
How long does it take you to write a book?
What a daft question! It depends how long the book is, doesn't it? How long is a piece of string?
How long have you been writing books?
Where do you get your ideas from?
I have a magic lamp with a story genie inside. When I'm stuck for an idea I rub it. (This is as sensible an answer as I can make to such a question as I've never had a problem with ideas.)