Virtues by Megan Mitcham

As a CIA spy turned traitor to her country, Cara Lee kissed her virtues goodbye long ago. After seventeen years, her retribution ended with the burial of her enemy and a fresh start with her daughter. If only she could forgive herself enough to rebuild their relationship.
Luck—her daughter’s fiancé—wasn’t Cara’s only attempt at atonement. She took Marina Sorensen off a Swedish street corner and schooled her in the art of survival. Too bad the girl sold her and Luck out to the thugs of Brödraskapet.

Her disciplined nature prods Cara to tie the loose end—one way or the other. But the commander of the UN’s special forces has other plans. The last thing she wants is another government job. Given an ultimatum—and a babysitter—she plays along.

Tyler Grace should have been a farmer in east Texas, but the universe had other plans. A tactical expert for the Base Branch, when he finds a problem, he seeks the best way to fix it. Cara presents an obstacle he’s ill prepared to conquer—but he’ll die trying.
Struggling to sort through her past, Cara clings to the one virtue she has left, while Tyler dares to prove she never lost them.