The skull found belongs to Esther Granger, a 17 year old who died in May 1866 from complications in childbirth, her baby daughter survived but she did not. Esther was also given a proper burial in Indiana, she was not buried in this house, she was not left in the house, she does not have two graves, Esther was not exhumed and so on. We will never truly know how her skull ended up in a random house in a different state but as the guy said it's most likely her grave was robbed at one point in time after her death and her body was probably sold for medical purposes, studying medicine and somehow her skull was put inside a wall were it remained until it was eventually found in 1978. https://www.youtube.com/watch?v=wXo6pRCKvbM