SEA OF GLASS by Tricia D. Wagner

Twelve-year-old Teo spends his days helping his drunken papá hang windows on shanties along Baja’s wild coast. When an old angler presses Teo to seek a goddess—the Sea Angel—for rescue, Teo sets out to test whether help can be found at the hands of the gods. To learn the truth, he must look beyond legends and summon the courage to challenge his papá. And to reach freedom, he must tap his own strength, hidden beneath wounds laid by glass.