The Shadow Heart - Southmore, #3

Now sixteen, an unhappy Arlen seems locked in her own world, barely on speaking terms with her sister and unable to tell Robbie how she feels. But when her mother discovers the Penmorven ruby and lends it to a client for an exhibition, Arlen's world is turned upside down, with Robbie disappearing, Penvynne released, and the girls' father back in town and up to no good. In this concluding novel to the Southmore trilogy, all three Penmorven women must tread the footsteps of their pasts and face themselves and the magical world once more if they are to save those they hold most dear.