Sylvie de Mathuisieulx lives in Strasbourg (67). She has two children. “I’ve been writing stories ever since I learned how to write, and, with a few exceptions, it’s what I like doing best of all,” she says. After studying law (she is now doing her dissertation for a doctorate), she has been an instructor for adults, essentially in the field of efficiency and personal development. She has already published some books, like Le père Noël se marie (Editions Fleurus). She wrote the La maîtresse series for Milan Jeunesse.