A Deceased Person Asking for Money

My mother-in-law dreamed about her father, who passed away half a year ago. In the dream, he came to her house and asked her for money. When she asked him how much he needed, he said, as much as you have. She went to the room to bring him the money, and when she returned to the entrance of the house, he had disappeared, and in his place there appeared a large blue snake. The snake bit her several times, but she did not feel anything. The snake moved around the house and disappeared.