She harbors a dark secret as she is secretly a killer but for what reason only she knows as maybe for primal reasons such as for thrills or bloodlust or maybe she’s involved in organized crime as a Hitwoman or she’s just as much a killer as she is a kidnapper and maybe has ties to human trafficking or prostitution.  She does enjoy  writing articles as she gets to cover her own crimes if she so chooses to taunt the public or specific people that is.
No real pattern really.one of your coworkers.