"What you have never seen one? Me neither.
"
No, I actually haven't. I find miraculous "cures" to be the most questionable sort of miracles, anyway. So many illnesses can go away all on their own that it seems a little iffy to claim that a particular illness was miraculously cured.
In the case under discussion, of course the other nuns prayed for the healing of their sister. Apparently, her symptoms disappeared. Now, did she actually have Parkinson's disease? I'd want to know what tests were done while she suffered the symptoms. It's pretty hard to definitively diagnose.
If it was one of the disorders that mimics Parkinson's, some of those disorders can spontaneously go into remission. If so, no miracle. But...one would have to have a definitive diagnosis in the first place.
So many problems with miraculous cures.
Actually, MineralMan, you're right about this one.
Medical miracles are terribly hard to authenticate. First, you need an exact diagnosis. Second, you need to be able to rule out a cure stemming from medical treatment.
Right there you have a paradox, because the kind of medical system that can give you an exact and certain diagnosis is also the kind of system which is in almost every case supplying some form of treatment.
Next, the Church insists that the cure must be (1) inexplicable, (2) instantaneous, (3) complete, and (4) permanent. This is an extremely tall order. It's practically daring God to jump through hoops.
This is why the Church so very, very rarely endorses a miraculous interpretation. I can't remember the exact numbers, but I think I'm in the ballpark when I say there have been on the order of 10,000 purported miraculous cures at the Shrine at Lourdes, France, since 1858, but the Church has offically investigated and recognized only 66.
That doesn't definitely rule out all the others. Most of them were simply not investigated, or didn't have sufficient documentation. But it does show how amazingly conservative, even skeptical, the Church is on such questions.
And rightly. The presumption is --- well, as Rene Laurentin says, "Normally, God acts normally."