White Is for Witching
Atmospheric, moody, and haunting, set in Dover, England, the story surrounds a twin brother and sister living in a boarding house with their father. Eliot and Miranda are mourning their mother. The house, an ancestral home, has its own personality--a possessive and malevolent one.
Miranda and Eliot escape to separate colleges and the house takes its anger out on the immigrant housekeeper in a bizarrely horrifying manner. Hint: It uses a mannequin.
When the twins return home, Eliot is worried but oblivious to his twin's chaotic mental state. (She suffers from pica and hallucinations.) When she becomes intimate with a Black girl from school, the house, using the voice of Miranda's ancestors, becomes outright hostile.
It's an eerie, unsettling tale for anyone who loves haunted houses and Shirley Jackson.