Ruled by Shadows by Jayne Castel

In a land ruled by shadows, the fate of all lies in the hands of a girl who is afraid of the dark.
Meet Lilia, a young woman who is afraid of … everything.
Lilia’s life changes the day a stranger walks into the tavern where she works as a cook. Handsome and darkly mysterious, Saul leaves a charm-stone in her safekeeping. Only, what appears to be a humble Hag Stone—used by folk to ward off evil spirits—is in reality a powerful talisman. One that a secret brotherhood has spent five-hundred years searching for.
Life will never be the same for Lilia again.
Her shadow begins behaving strangely—and when The Shade Brotherhood come after her, Lilia must leave her sleepy isle to embark on an epic journey into danger, discovery … and love.
The shadows are deepening and an ancient evil risks being unleashed upon the world. Lilia must face the darkness, and her own fears—or there will be no going home.