In the story Beloved there were many obstracles showed Beloved was a ghost. First, in the beginning its obvious that there was a ghost inside the house and that was Beloved’s spirit. But after Paul D showed up and shout at the cockroach, the house became silent because at the same time Paul D shout away the ghost as well.
Then later in the story, Beloved showed up as a physical person. They met her at the carnival and she was thirsty, so they took her home and feed her. Paul D against their decision, and dislike Beloved because he know she was pretending infront of Sethe and Denver as disability person when she has to hold something in order to stand up straight. Paul D told Sethe, he and Denver saw Beloved was not weak, but when Sethe asked Denver she denied. Ever since that, Paul D was very careful with Beloved. Denver know Beloved was not a human too but she refused to accept that because she want to keep Beloved as company to play with her, and thats why she denied anything that against Beloved. Also, Beloved knew everything that happen on them, such as the crystal earring Sethe had and the song Sethe only sang to her children. There were many times, Sethe believed Beloved was her dead baby girl and now she came back for her.