Servant's Bones by Mab Morris

The lowly village priest, Cemirowl, is a long way from her tiny cottage. The king's favor, and her newly-discovered lineage, has elevated her to the nobility of Pyrann, though her infamy as a seer of the dead still keeps her apart from them.

Now the time has come for her to know her family.

Cemirowl is sent to the castle of her grandfather, the Duke Dusavan. Durerine is a mountain keep full of hidden passages and clandestine ways, and its forbidding view hides a household in turmoil. The duke's new young wife, Lady Mhirabet, chafes at being ignored and sidelined; Cemirowl's uncle Loden lashes out in fury over small missteps; the indentured noble Cataphracas bides his time, and searches for a way to gain his freedom. Behind them all, hardly noticed by anyone, the Mouse scurries through the halls with her stolen baubles, seeing more than anyone and saying almost nothing.

The bones foretell danger, and they are never wrong. Cemirowl's power and insight has grown, but they may not be enough to unravel the threads of fate swirling in her ancestral home.

SERVANT'S BONES is the second book of The Bone Reader series, following Cemirowl's journey to master her abilities and discover her place in a world of intrigue and secrets.