I agree with
@carbuff 's descriptor for self-harm scenarios. I don't yet agree that this fits the entire criteria, given the circumstances..
-Extensive search of abandoned vehicle location reveals nothing.
-Her history provides proof of threatening to self-harm though no actual attempts.
-Lengthy history of family issues though she was reported to be recently in great health, with a great job, and having a splendid relationship with her daughter (spa appointment scheduled/ bday gifts found in car) e.t.c...
Without a body recovery, providing no proof of foul play, I'm not interested in the self-harm discussion.