In my historical fiction, the main characters live in a manor built nearly a hundred years ago around the time of the American Revolution. They're in the Deep South in the years leading up to the Civil War. Throughout their childhood, they've heard noises they couldn't explain: banging in the walls, something akin to a woman's voice in the hallways. They've felt sudden chills in certain areas, seen brief flashes of light or what they think is a person walking but upon closer investigation they found no one there. There's even a particular bedroom they refuse to sleep in because nightmares await those unlucky enough/foolish enough to do so. But this is pure historical fiction, and while they do suspect weird things in the house, while they do investigate the history of the manor, I'm not really planning to turn this into a quasi-ghost story where they literally meet a ghost and that ghost acts as a character in her own right. The question is, is there a way I can write this without turning my historical fiction into a quasi-paranormal story involving a ghost haunting their manor?