Every night, the silence of the Donovan house was shattered by the same sound: Isabelle’s screams. The nine-year-old would jolt upright in bed, sobbing and clutching herself, crying out, “No! Stop! It hurts!” Her father, Marcus, would rush in, pulling her into his arms, whispering, “It’s just a dream, sweetheart. Daddy’s here.” She would cling to him, trembling, but by morning, she never seemed to remember much, only that she was exhausted and pale, her spark dimmer each day. At first, Marcus br