Let's say for argument's sake that our good Lord has given this astonishing event to the Church and the world for His own inscrutable reasons.
I am deliberately going to leave the question of the Sister staying inside the novus ordo structure out of my considerations here; because it will only muddy up the intellective waters. That question can be addressed, and should be addressed, but first I wish to address only the symbology, with the presupposition that this comes from God.
It most certainly can come from God, even though it is a phenomenon technically belonging to the novus ordo; because we can distinguish between God's working in and through a faithful soul - possibly found anywhere, including the novus ordo - and God's working formally through the Sacramental Rites of the Church.
This is NOT a question of sacramental validity, nor is it a question of the falsity of the VII hierarchy. God can work through a soul, even a soul fixed in the mire of an entirely phony, i.e. "impostate" hierarchy.
If this event comes from God, then it is a sign. Jesus does tell us to keep an eye on the signs: "When it is evening, you say, It will be fair weather, for the sky is red. And in the morning: Today there will be a storm, for the sky is red and lowering. You know then how to discern the face of the sky: and can you not know the signs of the times?" Matthew 16
We know that Sr. Wilhelmina (W from henceforward) had a strong attachment to the wearing of her habit - and, as it was mentioned, to the authentic sack-clothian venture preferred by all true penitents.
In fact, my sense is that the wearing of the habit preceded her attachment to the Latin Mass. It may be that this attachment to her wedding attire obtained for her such an even greater grace.
With Sr. W, we seem to find a "greater grace spectrum," an "ascension by steps," a "going from virtue to virtue." Psalm 83
For she not only refused to remove her habit, not only concocted one of her own making, not only found the Latin Mass, but she pulled off the founding of a congregation, and, no mean feat, they became recording artists, putting sacred music back into God's ears. She ran the race, by all accounts, to the finishing line, to the obtaining of the prize.
She seems to have ascended the ladder all the days of her life, even unto the gates of Heaven. Fittingly she died on the Feast of the Ascension.
Why all this? To attract our attention, methinks, God knowing how hard have become all of our hearts. He knows we practical, material, and formal sedevacantists are champion poo-pooers of everything coming out of the carrion pit of the novus ordo.
But He wants us to look at this sign, nevertheless, and, I think, He wants us to look with analogical and metaphorical eyes.
Look at the incorrupt habit as much as at the incorrupt body.
The habit is the sign of the Church, the body the sign of the faithful soul; and the setting is the post-Vatican II tableau.
My reading of the sign of the habit is that God is telling the world that the Church is incorrupt, is a pure bride, and is not defeated by her enemies.
Nigra sum, sed formosa.
We even have the sign of an incorrupt negress: "I am black but beautiful, O ye daughters of Jerusalem, as the tents of Cedar, as the curtains of Solomon. Do not consider me that I am brown, because the sun hath altered my colour: the sons of my mother have fought against me, they have made me the keeper in the vineyards: my vineyard I have not kept." Canticles 1
"The sons of my mother have fought against me." Is that not the sign of the apostate hierarchy, the sign of Vatican II? Have they not kept her from tending her own vineyard?
My reading of the sign of the body is that grace is abounding everywhere, because sin is abounding. "And where sin abounded, grace did more abound." Romans 5
Certainly if we look with material eyes, we would deny that grace is abounding now; and would agree only that sin is abounding "all the more."
But what does abounding grace look like in God's eyes? Scripture tells us that it never looks like big numbers. God prefers quality to quantity. Remember the prophecy of St. Louis Marie - the Saints of the Last Times will tower above even the Martyrs of old. This towering is an abounding in grace.
How may we be abounding now? We who are so tired, so weary, so jaded, so disappointed, so betrayed, so confused. We abound in fidelity. We abound in love of the Truth. We abound in devotion to our God and our Lady.
And this abundance, I think God is trying to tell us now, is not limited to this faction or that faction or inside or outside the structure. Nay, the Kingdom of God is within the individual soul.
Every soul is a universe. Every soul is known only to God. Every faithful Catholic soul is struggling to obey and please Him, without the help and support and firm guidance of the hierarchy. Every soul is alone, floating in the tossing ocean on a flimsy piece of flotsam. It could very well be that God does not judge people as hard as the trads judge them. Perhaps He does not withhold His grace from people who attend una cuм Masses, for instance. Perhaps He is more angry with usurpation than with confused attempts to please Him and receive sacramental grace.
God has Saints everywhere, and this sign may be a Divine correction to us. We must stop our habit of making papal pronouncements on everything, and we must wait for Him with renewed hope.
For I believe this is a sign of the impending Resurrection of the dead hierarchy. It will happen by the hand of God.
The Divine call to arms is that we strengthen ourselves now in the particular virtues of faith, hope, charity, humility, patience, and submission. When the time comes, He will look for faith in our souls. I don't think we can strengthen this faith, if we do not strengthen ourselves in these other virtues. Faith alone will not suffice. We need the works of confidence, humility, and submission to decorate and enliven our faith.
When the time comes, many will be tempted not to believe that God is moving. Many will miss the boat, because they did not heed God's call to arms. Now is not the time for theology manual wrangling, of wedding and anathematizing various trad positions. I think our God is saying to us, "Shut up, and Look up; for your redemption is at hand."
May He soon come to save us, for we are perishing! Or so it seems!