CCC 329 St. Augustine says: “‘Angel’ is the name of their office, not of their nature. If you seek the name of their nature, it is ‘spirit’; if you seek the name of their office, it is ‘angel’: from what they are, ‘spirit’, from what they do, ‘angel.’”(St. Augustine, En. in Ps. 103,1,15: PL 37,1348) With their whole beings the angels are servants and messengers of God. Because they “always behold the face of my Father who is in heaven” they are the “mighty ones who do his word, hearkening to the voice of his word”. ( Mt 18:10; Ps 103:20)
So, if guardian angel is an office, what a spirit obedient to the Throne of Heaven
does, then there isn’t a particular reason why we would have the same guardian angel for our entire lives or that any particular spirit might not be guardian angel to more than one person. I do not know of any place in Holy Scriptures where it literally says: one soul, one lifetime-appointed guardian angel. Does anyone else? If anything, there are times in a person’s life–and certainly at Mass–when a person might be joining the work of a host of the angels.
Likewise, I don’t see why a saint, a soul enjoying the Beatific Vision, would not be in perfect communion with all other beings also in communion with the Most High, including all of the angels, all in one mind in unity with the God of Love. (A soul in Purgatory might be in a state of spiritual dryness, during which the presence of the angels is not something that soul could sense…this all depends on what Providence has decreed as the route of each soul’s purification. I know of no declaration on this or Scriptural teaching on this matter, either. I’d say that means that it isn’t necessary for us to know that.)
The way I heard it was that a (woman?) had had a vision of Hitler’s judgment. Except it wasn’t an angel who asked Hitler if he believed, but it was God who asked him.
As far as I know, while the Church has declared that certain souls have been revealed as saints by God, the Church has not made a single definitive pronouncement that any particular human has been made known as permanently beyond salvation. Certainly, Our Lord made it clear that damnation was a real state and that reaching it was a real risk. Having said that, what He did not do was to make an announcement that any
particular person had received that sentence. Instead, he warned that God, unlike humans, judges rightly, and also said that this judgment belonged to God alone.