One explanation for Sarah's behaviour stems from a legendary encounter she had with a psychic. During their conversation,that there was a curse on her family. The Winchester family had spread evil and violence around the world with their guns, and now, spirits were seeking vengeance. According to the spiritualist, the spirits had taken the lives of her husband and daughter. He advised her to go West, build a house, and continue to make renovations forever. Should she stop construction, the spirits would get her.