Attention seeker may be using her own friends to do the act.
Liar had a problem.
If she has gone to the police, as purported, and the police get the phone call log records from the phone company, it will show what cell or phone made the call at that time of the purported incident. This could explode on her if she actually had a friend phone in the threat. At that point, if this is the case, she would be into wire fraud and filing a false report.