@Arella Mae,
Even if the person is a danger to themselves or others, the obligation of the mental health professional is to have the person evaluated in a psych ER for possible admission--they don't necessarily have to notify the police. The police get involved only if there is a problem getting the person to a hospital.
The only instance I can think of when confidentiality cannot be maintained in a therapeutic relationship, is when a person is making very credible threats, or voicing credible plans, to kill or significantly harm specific other people, and the mental health professional feels these might be acted on, and it is not a situation that calls for immediate hospitalization. In those instances, the potential victim of such harm must be warned, if possible, and the police should be notified.
And, obviously, in cases of abuse and neglect of minors and the elderly, confidentiality of such conditions cannot be maintained by mandated reporters.
But, none of those situations apply in Dosed's case. And the "information" provided to her by Hawkeye, regarding "mandatory reporting" in her situation was inaccurate.