She doesn't really know much about her life before waking up in the refrigerated chamber. She killed herself, she assumes, given the long cuts down both of her wrists. She was as surprised to be waking up as the man who'd pulled her corpse out of the chamber was. He had his pants around his ankles. She didn't like that. He didn't survive the encounter. The Medical Examiner, Dr. Carver, was also completely shocked to see her moving around. Unlike the dead man, Dr. Carver hadn't done anything to her, so she let the woman alone. She stays at the morgue now. She doesn't really see a pressing reason to leave. Dr. Carver keeps her supplied with the meat she needs to keep her body going, and in return she makes sure that nobody else messes with the corpses.