I think if you concentrate on that bone scan, you'll have your case. Two doctors said she'd been worked over.
Another thought would be why her brain didn't show any damage until several days AFTER she initially admitted to the hospital, meaning she sustained damage while IN the hospital.
Another something to chew on is hino's actions in the hours before her "collapse" and his actions in the moments from his call to Bobby and the later arrival of 911. He didn't call 911 and he changed his story several times on how and when he found her.
It's probably too late to find out why/how she got damaged in the hospital..if that is when she received the head injury.
BUT..., I wouldn't put it past Michael Schiavo to turn around and sue the doctors' and hospital she was in at the time for her injuries after Terri is dead and cremated.