San Antonio chief medical examiner Vincent DiMaio testified that the wound to Routier's neck came within two millimeters of her carotid artery and that it was not consistent with the self-inflicted wounds he had seen in the past. That differed from the assertions of her treating physicians, who had told police officials that the wounds might have been self-inflicted. Tom Bevel testified that cast-off blood found on the back of Routier's nightshirt indicated that she had raised the knife over her head as she withdrew it from each boy to stab again.