I write about relationships, particularly strong female ones. A Nancy Drew book is very different. It's very plot-driven. I'm trying to create unique friendships and individual characters. My goal is that you're going to connect to the character and the jeopardy that they're in. You connect on an emotional level and invest yourself in the outcome.
One of the biggest challenges of writing for middle-grade or even young-adult readers is that I don't want to have too much violence in it - which really limits what you can do. It's important that they're not just bloodbaths or glorifying violence. I always try to show that a person who dies leaves a hole. There's grief in my books.