Carissa wakes up in an unfamiliar place and spends a minute trying to figure out if she ill-advisedly went off with someone last night - oh. No. Well, sort of, but more complicatedly than that.
She both needs to really think about Keltham and is nervous about doing it, because - how did he put it - she'll be reviewed for alien thought patterns. And she suspects that there are some, lying there sort of dormant, waiting for her to devote them enough attention that they can spool out into fully-grown heresies.
Asmodeus ordered Keltham taken to Cheliax and protected. (She doesn't know the exact content of Asmodeus's orders, only the bits that pertain to her: she should not use mind-altering magic on him, or hurt him, or threaten him; she should keep him safe, if a situation somehow arose in which that fell to her. Which it really shouldn't.) Asmodeus thinks Keltham is valuable. Representative, perhaps, of what humans should be, of what they'll be once they are purified in the fires of Hell. Not all the way there - he's still human, he's still imperfect - but much closer.
Therefore, trying to understand Keltham isn't going to be heretical. There might be awkward intermediate steps where she believes something that's wronger than either her current beliefs or the correct set of beliefs, because understanding Keltham isn't something that's been done before where all of the heresies have been already identified so you can be warned against them and if necessary punished out of them. But the end goal here is to approach Asmodeus's perfection, which Keltham is closer to than her, even though he's not even smarter.
She stares at the ceiling idly tracing this set of thoughts in circles until it no longer distracts her and she'll be able to pray in a less self-centered way. There's no altar in this guest room so she kneels on the floor, facing the wall.
Asmodeus, my lord, my god, owner of my immortal soul, steward of the fate of Golarion and all the distant stars, if it pleases You, make me Your worthy servant. May it serve Your aims to anticipate my stupidity and my errors and my flaws, and teach me better, to show me how I can be useful to You, and preserve me that I may grow in your service, to perfect me. See me in my weakness, my unworthiness, my foolishness, and see the bits of me that You can use, and help them grow in me, that I may be useful to you, and worthy of Your eternal life. Help Cheliax grow in strength and power, that it may spread Your power through the world, and bring Your teachings to everyone everywhere. Help Keltham of dath ilan to serve you, even if I think he does not have the concept that one should serve gods, and even if we haven't told him what You are and what You demand of us. Help us understand You better, that we may know the explanation of You that Keltham could embrace. Guide my mind in the path of understanding so that I do not fall into heresy or weakness or lies, so that I can reconcile all that I know of You, so that I can witness for You.
Her heart is beating a little faster by the end, probably out of the vague awareness that Asmodeus did recently directly concern Himself with this precise thing, and of course He talked to His priest not to Carissa, but still, it suggests a degree of attention that most mortals do not ever experience, and mortals are endlessly disappointing to Asmodeus's direct attention. She tries, for a second, to see herself as a god must see her - tiny, stupid, disorganized, contemptible, frustratingly the sort of agent they must use to act in the Material Plane - but maybe that, too, is heretical, trying to imagine being a god.
There's a knock on the door.
"Come in," she says, but remains kneeling.
"Sevar? I'm to brief you. Have you prepared spells yet?"
"Not yet." She stands up. Her legs have lost their circulation and are numb and prickly.
"Well, first briefing highlight, don't bother preparing Detect Thoughts, he became a third or fourth circle cleric overnight and now we can't read him."
"He what? Of who?"
"That's a very good question. Lawful Neutral. Probably Abadar? Could also be Irori, or, uh, Erecura, or Otolmens, someone we haven't heard of."
"I haven't heard of Otolmens," Carissa says, wiggling her toes experimentally.
"I hadn't either until an hour ago. Lawful Neutral god of stopping mortals from exploiting physical or mathematical features of the world that permit destroying it."
"There's a god of that?"
"It's not advertised since that, you know, implicitly communicates that there are physical and mathematical features of the world you can use to destroy it. But yes. And, uh, Keltham was contemplating ways of exploiting physical or mathematical features of the world to create really big explosions, so, now we have learned that Otolmens exists, and They're on the list of candidate Lawful Neutral gods who gave Keltham cleric levels last night though one of the unlikeliest."
Carissa takes several moments to think of something to say to that. The first thing that has come to mind is 'what was his idea to create really big explosions' but if she needs to know that she'll be told. She doesn't want to destroy the world at all, she's entirely certain she can pass a loyalty screen about that.... "Three or four circles all at once? Does he have any idea how to use them?"
"He does not. Nor how unusual that is, though we don't think we should bother pretending it's not unusual. We're hoping he'll ask you, once he's awake, which he isn't yet."
"Will he know what god he's a cleric of?"
"We don't think so."