Susie Morgenstern, the American star of French kids' fiction

We speak to US author Susie Morgenstern, who's written over 150 books in her five-decade career, including several bestsellers that have become classics here in France. She's has won several awards, including a knighthood from the French government and most recently the Grande Ourse, the lifetime achievement award at France's prestigious Youth Literature Festival that opens this Wednesday just outside Paris. She tells us what brought her to France and what advice she would give to young writers.