Protected by the Laird. The Conquered Bride Series, #6

WHEN SHE NEEDED A CHAMPION. HE RAISED HIS SWORD.While besieging an enemy castle, Laird Douglas Hay comes across the half-frozen body of a lass. She's obviously one of the enemy, but he cannot allow her to die. Besides, as his captive, she could bring a hefty ransom. He revives her, a task easier managed than her fiery temper and the intense desire heating his veins. Taken as a prisoner by the brutish warrior, Lady Annora Comyn is determined to make her escape.
Secretly, she believes the war between the Comyns and the Bruce is ridiculous, that the vying for the crown should have died the day her royal brother was murdered. Annora struggles internally with the notion of letting men fight their battles or putting herself forward as collateral in a treaty to unite the warring Scots. After all, there are far worse things than having to kiss Laird Hay every day for the rest of her life.