Disclaimer: This question might present some spoilers regarding Ustalav and the Monastery of the Veil. If you're a player about to play a campaign including those elements and don't want to accidentally learn the setting's secrets, you probably shouldn't read the rest.
The Monastery of the Veil is a famous Pharasmin center of worship, located in the Hungry Moutains in Ulcazar. Little is known about it, for the monks that inhabit it are reclusive and swore an oath of silence. However, its archives are most renowned, as they remained untouched during the war with the Whispering Tyrant and are therefore probably one of the oldest collection of knowledge from Ustalav. (The Monastery was built in 3882 AR)
In 4144 AR, the Countess Robeskea requested the assistance of the Pharasmin monks to cure her sons from a plague known as the Whithers. When they refused, letting the children die, the Countess turned to the cult of Norgborber, who eradicated the monks and took their place, claiming their vast vault of mysteries and secrets. Their leader soon emerged with a new charge and a single word: "Anaphexis". The Anaphexia is an order of mute assassins worshipping Norgorber.
The question is, why did Pharasma not react after those events? While the gods are not supposed to act directly on the Material Plane, the Lady of Grave has more than a few emissaries that could deal with the problem. In fact, her agents are actively traveling the planes, hunting anything that disturbs the flow of souls.
The violation of the Anaphexia did not hinder the flow of souls, as far as we know, but they're still using the cover of the Pharasmin monastery. On top of the eventual tarnishment on Pharasma's reputation, the catacombs seem to hold valuable knowledge and/or artifacts, that have effectively been stolen from the church of Pharasma. Given the nature of the cult, they wouldn't have hoarded anything unrelated to their charges, namely things that will have to do with the flow of souls (necromantic spells, mysteries about prolonging one's life, harvesting souls... Imagination can run wild on the possibilities).
**So why did Pharasma not dispatch one or two higher psychopomps to deal with the matter? Is it stated at all (and in this case, am I missing it in my research) or is it left to the GM/player interpretation? **