The wicked and the just - J. Anderson Coats

Cecily’s father has ruined her life. He’s moving them to occupied Wales, where the
king needs good strong Englishmen to keep down the vicious Welshmen. At least
Cecily will finally be the lady of the house.
Gwenhwyfar knows all about that house. Once she dreamed of being the lady there
herself, until the English destroyed the lives of everyone she knows. Now she must
wait hand and foot on this bratty English girl.
While Cecily struggles to find her place amongst the snobby English landowners,
Gwenhwyfar struggles just to survive. And outside the city walls, tensions are rising
ever higher—until finally they must reach the breaking point.