"Oh, this? You don't recognize Magos Pinel?" Stoll muttered.
"I changed my vocalizer preset!" said the other voice on the vox, now much more like what you remember from Pinel. "Did you know you can just [i]do [/i]that? Check this out: Aaaa[i]AAAA[/i]aaaaaaaa[u]AAAAA[/u][s]aaaAAA[/s]~"
"Pinel!" snapped Stoll. "You disrespect the Machine!"
"Sorry Magos Stoll," said Pinel, this time in a deep low, masculine voice. 
"Do not apologize to me! Apologize to it!"
"Sorry, sorry -"
"Properly!!"
"Forgive me, voxsponder who art in my throat, strength hidden is strength multiplied -"
"Spin the dial frivolously and it will break off! Then the Machine shall go dark, and who shall know how to fix it -"
"Uh, I will?"
"WRONG! Have you not listened to the tale of the Ship of Themis!? Does the Lore Mechanicum mean nothing to you!?"
"Whatever you say, Uncle Stoll," said Magos Pinel.

[Flattery] It isn't much to say that she is telling him what he wants to hear, but it is interesting that she is sincerely disrespecting the knowledge of a storied Necromechanic while standing in his workshop. She is not ignorant as to what he is capable of, she just genuinely thinks he's a hack. She thinks she can do better. 

*

[Diagnosis] Once the check for the Devourer's influence is complete, you start going through the complex strains of human genetic and cellular markers. There is a great variety in Humanity; the Spiral Ladder has long been scarred by the touch of the warp, the aftershocks of genetic and viral warfare, of mutation and disaster, of deliberate craftsmanship and Dark Age enhancements. By the time of the Emperor, it is said, there was not a single pure human remaining on Holy Terra amidst the techno-barbarian tribes; it was only the tripartid genius of the Omnissiah, Mars and Luna that resurrected humanity as the Throneworld remembered it.

But in all of those infinite skeins of blood, human and abhuman, you find no match and no echo. Not the Devourer, and not human. It is genuinely novel to be confronted with a genetic sample descended from neither lineage. Magos Toros would not have seen anything beyond those two since her Explorator days.