Black Water Sister by Zen Cho

In this captivating tale set in Malaysia, a young woman named Jessamyn Teoh finds herself caught between the modern world and the supernatural realm when she begins hearing the voice of her deceased grandmother. As Jess navigates her family's secrets and her own identity crisis, she becomes entangled with a vengeful spirit known as the Black Water Sister. This spirit, tied to her grandmother's past, demands Jess's help in settling an old score, forcing her to confront her fears and embrace her heritage. The story weaves together themes of family, tradition, and self-discovery, all against a backdrop of cultural and spiritual complexity.