Wait for What Will Come by Barbara Michaels

She was the last of an ancient Cornish clan, and Carla Tregellas had inherited the pride of her family name—a huge mansion that loomed high above the jagged cliffs of Cornwall. She felt at home there right from the start, for everyone seemed so kind and welcoming. Everyone except Mrs. Pendennis, the eccentric housekeeper who advised Carla to leave at once to deter a tragic and inevitable fate. But Carla could not leave—for the invisible bonds of an ancestral curse were just beginning to take hold...

Paperback, 1990

Goodreads: 3.88