So if you made an appointment with your doctor to meet in his or her surgery to ‘have a chat’, not being ill at all, but said private medical stuff during the course of that chat (say you were seeking advice about the illness of a loved one rather than your own) you’d be fine for the doctor to blab the contents of that chat all over town?
Under the privacy act of 1972, discussing confidential medical information is always protected, whether one is discussing their own condition or those of their dependents.
Again, this is a false analogy.
Instead, let’s compare it to the psychiatrist who sees a new patient. That new patient sits down and gives a detailed plan to murder two people… not speaking hypothetically, but actually detailing a plan.
Not only does the privacy act of 1972 NOT apply in preventing the psychiatrist from speaking with police, the law actually COMPELS the psychiatrist to report that plan to police (or the psychiatrist can face accessory to murder charges).
Confidentiality is more about the relationship between the parties than the setting - it is the fact that you are talking to your doctor/lawyer/priest in the context of their role as such, rather than just the fact you are formally having a legal/medical consult or formally making a confession that gives rise to this expectation that what you say will be confidential.
And that relationships is predicated on the idea of valid confession, which requires valid material from an actual penitent to exist. A person “confessing” that they are planning and going to murder someone is NOT a penitent and NOT confessing valid material. They have no validity of the “expected relationship” because they are NOT partaking in any part of actual confession…
Canon law sets the bare minimum - it does not mean that ethically or morally there are not times where more than that bare minimum is called for.
Nonetheless, the moral ramifications are horrendous if the seal applies to the case of the woman telling the priest that she planned to murder while purporting to be confessing.
First and foremost, what that means is that the seal of the confessional does in reality is protect the interests of the personal murder (that interest being to commit murder, not to repent from sin) over the lives of the innocent that will be lost if the priest fails to report the plan. That is wrong, it’s evil. It turns the sacrament from a means of grace for the penitent into a means of cooperation with evil on the part of the priest (might I remind you that it is a sin itself to NOT speak when one can do so to prevent upcoming grave sin, particularly sins against others such as murder).
If that is the case, then we have a sacrament in which it is possible to promulgate evil rather than good, in which an evil person walks in to see a good priest, and the priest leaves the confessional in a state of mortal sin himself because the “rules” say that the priest MUST cooperate with evil by remaining silent while lives are lost.
If so, then secular morality has us beat insofar as it doesn’t protect the nefarious and neglect innocent lives lost… and that would be a travesty if it were so.