Anyone teaching any other way than Jesus is doing so by the spirit of antichrist, especially if they
consider themselves a minister of the Gospel!
I certainly think this is a reactionary and ill thought out post. ^^^
But back on topic:
Your minister is surely expressing a belief that is directly contrary to the church's teaching. It is in direct opposition to the quoted bible verse. For this, I believe the right thing was done to quietly confront her. She may need this confrontation to help her clarify her stance. A devout Christian and Presbyterian Minister... or something else.
I'm not saying there is anything wrong with being something else or even turning to another faith if her heart tells her to, but it surely is inappropriate to do as she did. It is not her place to implant interpretations that go against the fundamental principles upon which the faith she is attempting to teach, was built.
I would ask her to question her faith and her beliefs. If they are not in complete harmony with the teachings of the Presbyterian church then she has no right to be the embodiment OF and the teacher FOR that church.
Our leaders are not infallible but surely we should not stand to be led astray. Remember, we all have a right to chose not only what we learn, but who is best suited to teach us.