death. >> there was a slight ligature mark around her neck but it was disrupted, and it almost appeared as though that there was possibly a hand -- >> her hand maybe, trying to -- >> -- trying to pull, so the ligature marks were kind of intermittent. >> reporter: and one more thing the autopsy revealed, she'd been sexually assaulted. >> the first thing that goes through your head is why, how, who? i mean, everybody is a suspect and nobody's a suspect. that's -- who could've done this? why? >> reporter: she have any enemies? >> none that we knew of. >> coming up -- the man in jessyka's life and their volatile relationship. >> she would call us, like, every other week. "can you come out and get me? me and john had a fight." >> and then did a facebook post put her in danger? >> she just put out there that she was home alone. and she did it without even realizing. n my windshield crack.