The Mistletoe Mistake of Miss Grayson

Everyone knows the headmistress is destined to be a spinster. Well . . . everyone but the Marquess of Ainsley.
The Marquess isn't certain why the elegant and resourceful Miss Grayson is so determined to remain unmarried. But he means to change her mind over the holidays.
How will he coax the refined beauty out of her shell? It will take a Christmas miracle-of the mistletoe variety.