The Doom-Bringer Who Speaks Death

Her words deliver blessings (eyes open) and curses (eyes closed). Father and stepmother regarded her as a doom-bringer, sent her away. Fifteen years later, she returns to collect debts. Grandpa Sterling murdered; inheritance seized; younger brother beaten into a fool. She used blessing utterance to restore his sanity. Her words become prophecies, every sentence brings death. Villains realize she was not a doom-bringer, but an Underworld King.