So Silver Bright (Theatre Illuminata Series #3)

All Beatrice Shakespeare Smith has ever wanted is a true family of her own. And she's close to reuniting her parents when her father disappears. Now Bertie must deal with a vengeful sea goddess and a mysterious queen as she tries to keep her family—and the Theatre Illuminata—from crumbling. To complicate it all, Bertie is torn between her two loves, Ariel and Nate.