They did end up calling somebody in because I was the last one willing to go and stay with grandmom to keep her company. But even in my late teens, I FLAT OUT REFUSED to set foot in the place anymore.
Also, since we didn't know where the basement tunnel went (It sloped slightly down, and then turned right), I was always afraid that somebody (a human) would come up and out via the basement. So I always kept that door locked and begged her to get a dog, but she wouldn't.
Some religous people came in and did something (I wasn't there), and then after that, we didn't have either the woman, or the tall hallway "thing" show up anymore. But I still kept my bedroom light on all night long when I stayed there.