The Taking Year - The Giving Year Cycle, #1

On Gull Island in the cold North, Eithni awaits Winter Solstice with pride, resentment, and fear. All signs point to a Taking year. And Eithni, chosen to enter the chamber of the gods, prepares to leave her human community forever. On the other side of the Stone Door, Sable stands guard in anticipation of a successful solstice, when the veil between worlds will lift...and when her liege, a lightlord of the fey, will claim the human woman who willingly steps across into the Summer realm. But everything changes when Eithni breaks the rules.
Everything changes when Sable hears a voice from the stone. A fantasy love story set among the Picts in Early Medieval Scotland.