The Mischief of the Mistletoe (Pink Carnation #7) by Lauren Willig

Arabella Dempsey’s dear friend Jane Austen warned her against teaching. But Miss Climpson’s Select Seminary for Young Ladies seems the perfect place for Arabella to claim her independence while keeping an eye on her younger sisters nearby. Just before Christmas, she accepts a position at the quiet girls’ school in Bath, expecting to face nothing more exciting than conducting the annual Christmas recital. She hardly imagines coming face to face with French aristocrats and international spies…