Wedded to the Wicked Highlander by Lydia Kendall

“It will take more than an army of men to keep me from her.”

Lady Mary Underwood is shipped off to marry a notorious Laird, right after the death of her cruel husband. But she is tired of others deciding for her life, so she vows to make his life hell, in hopes he might send her away…
She never expected him to enjoy her shenanigans. Or that he would be so devilishly handsome.
Forced to become cruel to help his clan, Laird Christian has never wanted a bride. When a marriage of convenience is presented to him, he accepts on one rule: it is strictly business. But he soon finds himself covered in the blood of those who tried to hurt his wife…