Where do the Cold Sisters Stand?

[Edge the He-Witch]

I’m GMing Reign of Winter and I haven’t found anything in the book that even mentions the Cold Sisters in regards to the current political climate.
There is a lot of detail regarding the Winter Guard VS the Iron Guard, but no mention of the Cold Sisters. We know they’re essentially the Irriseni Inquisition and that they are vigilant and ruthless in rooting out dissension or anything they deem as treason against the crown. But does their loyalty to the current queen override their loyalty to the grandmother of their nation? Is there a schism going on among the Sisters?

Spoiler:

I realize part of the reason they aren’t detailed in the AP is because they’re generally too high of a CR when the PCs get to Irrisen, and by the time that changes the PCs have long left Irrisen behind. But I’m still interested.

[Tangent101]

Seeing it's not mentioned, you can do what you want with it. There could be a magical cold war going on in Irrisen similar to that between the Winter Guard and Iron Guard... with Baba Yaga's faithful having mostly fallen and gone into hiding. Heck, you could even have some of Baba Yaga's faithful among the Cold Sisters be found in Books 3 or 4, trying to find signs of Baba Yaga (and not trusting the PCs of course) and those loyal to Queen Elvanna trying to track them down so the PCs can join in or just sneak past.