Agayla, the old witch of the Mouse, the tutor of Kiska and, for what I can get form all the books where she appears (Nok, TBH), may be a minor god or at least a very powerfull ascendant.
We can see in TBH that Bottle is link (well form a little far) to her. We can see to that the little Mockra trick used for infuriating the mobs doesn't work on her (abd after Nok, it doesn't even surprise my).
Nok spoilers :
It seems taht she is perfectly knowing what happened with the CG and that she can manage to help to save the world ("Can I help you to save the world ? Of course I can").
So, who is she in thruth and did I forget something about her ?