[Dominick]

There were only two possibilities: either McCarrick gave it to her...or the Holy Office.

I thought a lot about this.

I doubt McCarrick opens his own mail. I doubt he files his own mail. I doubt he is the only one in possession of a key to the file. That is even assuming that the files are locked. People working in that office may have seen the letter, and heard the lie.

At that time, there is a chance to uphold the Truth, and expose a lie, a lie that was leading to desecration of the Sacred Species.

We don't know where the letter originated. I would doubt the Holy Office would leak it. This does not confirm Magister as a resource of insider information.

[ninenot]

I've thought about it too.

The Holy Office has a number of young-Turk US priests working there--any one of which could have been more than a little PO'd about McC's blatant lie.

Leaks happen, usually in righteous anger (even though it's likely a matter for confession...)