Stolen Child: The Janna Chronicles 2

Love, revenge, secrets - and murder - in a medieval kingdom at war.
Forced to flee for her life, Janna sets out in search of her unknown father, hoping to avenge the death of her mother and bring the murderer to justice. Disguised as a youth, Janna takes shelter on a manor farm managed by the handsome nobleman, Hugh. There she encounters mysterious acts of sabotage marked by posies of rue, culminating in the disappearance of Hugh's young nephew, Hamo.
Janna can trust no-one in her bid to find out the truth. Godric has turned against her, while Hugh stands to inherit everything if Hamo dies. Can Janna find the child before time runs out - for both of them?