In Love With the Wrong Highland Sister by Olivia Kerr

She knew she would never find love. Until he arrived.

Laria might be Laird Maclean’s eldest daughter, but she will not be the one to give birth to the heir. The lass had been wed, but she lost her husband to a fever they both suffered from. Now she is told she is left not only widowed but also barren…
Seeing no other way to be helpful, Laria became a member of her father’s warriors, earning their respect with hard work. When her younger sister’s time for marriage comes, Laria is happy for her, yet she can not help but feel a pain in her heart seeing her sibling getting what she never will.
James Elliott, her sister’s future husband, is a stunning man, large, with dark hair, and the eldest son of Laird Elliott. Jame’s father has recently stepped down, but he has decided that James can’t take the Lairdship until he finds a wife suitable to rule at his side.
Laria’s young sister is ready for this marriage, but James seems to spend more time sparring with Laria than talking to his future wife! If this is not a trick and James has indeed fallen for Laria, what should the lass do? Follow her feelings and disobey her duty, or close her heart forever and accept that she was not meant to be loved?