This is my favorite pet peeve. If the Sister received a private revelation, then the Church says that the revelation is FOR HER. It bugs me when people extrapolate from private revelation to turn it into general revelation, such that everybody is supposed to believe it.
Take Fatima for example. So we know that something happened in 1917. But, the one surviving child who became a nun was still publishing more details about the revelation something like 10 years after that. And, the “third secret” of Fatima was dragged out over this nun’s lifetime, and even before her death, she was not certain of its meaning.
It’s a challenge for me to live up to what we refer to as general revelation, without more and more private revelations popping up all over the place to distract me. The position of the Church is that even if “approved” (whatever that means) that they add NOTHING to deposit of faith.
I think we all (believers) experience private revelations, as our study of the Bible and the Catechism and commentaries, etc. expand our knowledge and appreciation of revelation. But, situations like this one show the bad underbelly of this – the books, the pilgrimages, the cult-like following of the “prophet”, etc. where there is a financial motive lurking beneath the surface.
I skimmed the linked article. I didn’t spot anything that was earthshaking. The article was mostly about the Vatican squashing these professed people for going off on their own.