What's that electronic sound around 44 seconds in? It sounds very familiar to me but I can't place it. Is it a sound coming from her other phone? I read on one of the links that she had 2 phones with her. If she was whispering then I would think that sound would have alarmed her or someone else in the vicinity (she said they didn't know she had a phone). Also, I noticed a cry from a small child in the background later in the video (2:22) -- it sounds like she's not in complete isolation.
If she's posting a Facebook live video, why does she keep asking to hear her mom's voice? "Mom are you there? Hello? Mom if you can hear me please say something. I really need to hear your voice." She sounds a bit confused. "You gotta tell the cops everything." Maybe too confused to call the police? I know if I were terrified I might freeze and forget how to call 911 on a cell phone or something... but then why not say at the beginning "I've been kidnapped! I'm locked in a room and need help!" etc, rather than asking to hear her mom's voice? There wasn't a real sense of urgency or rush -- it sounded like she was sort of resigned to dying. Very disturbing.