In one section of Chapter 8, the Duchy of Andurien is stated as being "a component state of the Free Worlds League". However, according to Shattered Fortress, the Anduriens remain separate from the reconstituted League as of last reporting, nestled as it is in a marriage alliance with the Magistracy of Canopus... and, through them, with the Confederation itself.
That said, the Oriente Protectorate is not much farther from Castrovia than the Duchy of Andurien is. Perhaps Oriente would be a better target for the kind of (false) propaganda being discussed in that chapter?
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Speaking of the Magistracy, I find it somewhat unfortunate that Danai - who, so far as I'm aware, is no less in line to become Magestrix as she is to become Chancellor - has gone to such lengths to distance herself from the Centrella side of her joint lineage. But then, she wouldn't be the first BattleTech character with a double surname to lean more heavily on one side over the other.
But then, perhaps the Canopian influence might be more noticeable if/when she inherits the Chancellorship, should she set out to reform certain aspects of Confederation society?