My favorite bride: The governess brides series, book 6

When Miss Samantha Prendregast arrives at Devil's Fell to take charge of six rebellious girls, the vibrant, outspoken governess is not quite prepared to deal with the tall, dark and dashing master of the grand estate. The children she can manage with intelligence, guile . . . and a little bribery. Their widowed father, Colonel William Gregory, is not so easily charmed — and far too easy to fall in love with, which she dares not do. William always cherished the orderliness of his life, until this captivating troublemaker began flouting his authority and distracting him with her witty defiance and breathtaking beauty. Despite the fact that they clash at every meeting, William finds himself inexplicablydrawn to Samantha's fire. And now he's even contemplating marriage, which would be sweet madness indeed. But before he can successfully woo her, William must discover what it is that Samantha is hiding from him. But the secret the lady is preciously guarding is far too shocking and dangerous to ever reveal . . .