I was a very quiet child, quite introverted, really. Independent, yes; I didn't need a lot of supervision. Less so than I did when I got older, maybe. But I was a bookish child, not surprisingly. I could sit quite happily in a corner for hours and entertain myself with books.

It's not easy making a living as a writer, and for many years I worked at a Waterstones in Dublin. It was a good environment for an aspiring writer, with lots of events and authors appearing.

I was dropped by my publisher after my first two books. But I always believed in myself.

War today is such a more visible thing. We see it on television, on CNN. In 1914, war was a concept. There was a naivety and stupidity that war would be a great lark. It's not that different from Gone With The Wind, where all the young men can't wait to go off to fight and then two hours later in the movie, we see how the reality of that has come home to them.

I can't bear to be on a train without a book", she announced. " It's a form of self-defence in a way" .

I started reading Dickens when I was about 12, and I particularly liked all of the orphan books. I always liked books about young people who are left on their own with the world, and the four children's books I've written feature that very thing: children that are abandoned by their families or running away from their families or ignored by their families and having to grow up quicker than they should, like David Copperfield - having to be the hero of their own story.

And I have tried to forget him, I have tried to convince myself that it was just one of those things, but it’s difficult to do that when my body is standing here, eight feet deep in the earth of northern France, while my heart remains by a stream in a clearing in England where I left it weeks ago.