Essentially, Joan was beaten, choked, sexually assaulted, and ultimately battered to death. But according to Dr. Zugibe, it was even worse than that. Had she died right after the beating and strangulation, her face and body would not have appeared swollen. Upon death, the homeostatic functions that cause swelling at an injured site shut down. And since swelling takes about half an hour to be completed, he concluded that Joan must have been alive for at least that long following the attack. Mercifully, she was almost certainly unconscious.
