How badly mutilated are you talking about? That's what fingerprints are for, or dental records. Or DNA.
[Can you extract DNA from a ghost, if she's a ghost?
She'd scraped her knuckle, and she'd bled, so she's going to assume that she can test her own DNA if she has to, as morbid as it is to think seriously about the possibility of identifying her own corpse.]
no subject
[Can you extract DNA from a ghost, if she's a ghost?
She'd scraped her knuckle, and she'd bled, so she's going to assume that she can test her own DNA if she has to, as morbid as it is to think seriously about the possibility of identifying her own corpse.]