Maybe I'm following too many twisted crime threads at the moment, but how hard would it be for someone who wishes to harm her or get her out of the picture to leave a message that appears to be from her saying she's depressed, upset, about to do something terrible. Anyone could leave a message, esp if they used her phone, no handwriting sample, no evidence as long as they wiped prints. As long as they weren't captured on video/surveillance in the area and turned their cell phone off to prevent a cell tower trail it would be pretty easy to manage. And if someone close to her, finding their DNA on car, on her person, wouldn't prove a thing.
All MOO of course and I hope I'm wrong. I hope she is somewhere blowing off steam and returns to her loved ones safe and sound very soon.
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