Breanna’s Surrender by Jayne Castel

“It’s silver he cares about. Nothing more.” A woman dedicated to the cause, a cynical mercenary—and the fake marriage that brings them together. Passion and patriotism collide in Medieval Scotland.
Breanna will stop at nothing to defend Scotland from the English—even if that means she has to work with a sell-sword, a man whose loyalty can only be bought.
Cameron Stewart has learned that loyalty doesn’t pay. These days, he prefers to hire his blade to the highest bidder. But when the strong-willed and proud Breanna—a druidess belonging to a secret order sworn to protect Scotland from invaders—hires him to help her protect Robert the Bruce, Cameron’s deliberately uncomplicated life gets messy.
Posing as husband and wife, the pair join the newly crowned king of Scotland as he sets about liberating their country from the English. Passion ignites, but Breanna resists surrendering her heart to a man who long ago walled off his own.