Darkness - Freya Snow, #15

Freya thought her fight was over. She was wrong. After finally defeating Lord Uther, Freya fell into a holding pattern. With her husband and daughter gone, there was nothing for her to do except wait for change. But when her girlfriend lights a rescue beacon, it becomes apparent that all is not as quiet as Freya thought. And saving those she cares about might mean facing the darkness that has always plagued her...
DARKNESS is the fifteenth and final book in the Freya Snow urban fantasy series, which starts out as YA and follows Freya's magical adventures through to university and into adulthood. If you like kick-ass, sarcastic heroines, immersive magical worlds beneath our own, and love that crosses the lines of magical feuds, then you'll be instantly hooked on L. C. Mawson's fast-paced urban fantasy series.