It is common for people to want to destroy their enemies because they don’t really comprehend them, because they cannot see any good in them or do not realize about themselves that they would stop if they did see. Almost everyone driven to the horror of true-murder is, in some sense, lying to themselves, refusing to see a sacred thing they’d be unwilling to destroy if they could see it.

Sarenrae’s first hope is that Keltham is making, by his lights, an angry and wounded and bitter mistake, like people do, and that now that He's a god He might be able to understand new truths that’d make Him not want to destroy Creation anymore, in which case She will expend an astonishing amount of resources conveying all of that information immediately.

Keltham does not try to conceal Himself from any Good god's inspection, and it will be obvious to Sarenrae that (though He is truly wounded) He is not a shape that could be changed by that revelation, that everyone else's existence is as intensely real as his own.  Most of His hesitancy about destroying Creation is held within His doubts about whether everyone else here is equally real.  If He were certain that every paving stone in Hell was just as real as himself, that Creation was continually producing new souls and sending thirty percent of them to Evil afterlives and all those people were real, He would be all the more driven to end this.

Seeing this, She grieves, and has little more to offer the crisis.

Obviously She favors ending Hell, if anyone was wondering. And yes, should any souls be displaced by present events, from Hell or for that matter from anywhere else, Nirvana has space to take every one of them.

(Nirvana sends a lawyer to every Boneyard trial, to argue that everyone has Neutral Good in them. This results in Nirvana getting a number of souls that may have Neutral Good in them but are, you know, not conventionally Neutral Good, or at all people you’d want to have wandering your paradise. The isle that houses them is not, in fact, infinite, but Sarenrae while She still possessed any power at all would not let it be false, that there was space in Nirvana for everyone, that it would turn away none of them; She would die making it true, should it ever come up.)

(Some Evil gods have probably considered whether it would be funny to make Her do that, but it’d take a truly ludicrous number of souls.)

(...And if Pharasma's sorting were subverted on that scale, She would likely object.  A few mostly-Evil souls won by Sarenrae's isle doesn't seem to bother Pharasma, any more than the tenth that many souls who end up Maledicted: they're a statistically small fraction, and both varieties of soul end up Good and Evil, in time.  But wholesale relocation of mostly-Evil dead to Good planes probably would impinge on what the gods guess to be Pharasma's own priorities; or at least, some of Her rare interventions seem to have been aimed at not-that, long ago in the Beginning.)

Asmodeus is, predictably, not going to give into a threat even if that kills Him; mostly that makes entities not try it. And this is, obviously, the work of Iomedae, who He knows does not want the world to end, and so no one will give in. If, bafflingly, She’s arranged for a sufficient coalition to side with Her, well, Asmodeus too can play the game of doing things-against-His-interests-that-harm-the-other-party-more, if that’s the stupid game they’re playing; He’ll release Rovagug and order all the souls in Hell shattered before any saviors can reach them.

Iomedae is busy eating Zon-Kuthon but not too busy to make legible that She has done absolutely no acting-against-Her-interests at any point, ate Zon-Kuthon on Milani’s claim it was a good idea for Her, and opposes the destruction of Creation! Very vehemently! She was guessing that Keltham would be crushed on ascension; She would have impeded Keltham Herself, if She’d possessed unencumbered knowledge of His plans and if She’d expected that no one else would stop Him.  She requests that Asmodeus act with such scraps of civilization as are in Him and not spitefully destroy everything while they figure out if there’s something else to be done instead.

(She can actually see now of Her own unencumbered knowledge how this ought to resolve, from the logic that threads through everything that has happened so far, but She’s not going to tell Asmodeus that. Because She hates Him.)

Sarenrae also requests clarification on the obvious point here where this was clearly orchestrated by some parties – they can identify themselves if they want or She can think for slightly longer and She’ll figure it out – who were not allowed to do things like that, and who presumably don’t want the universe destroyed, and who should have known that that is precisely what they were bringing about.

Of those gods that hovered around Keltham, who were once-mortal enough to understand key parts of what has happened, Irori knows He may be the only one who can and will speak.  He does not understand fully; He is coalesced and trying to think as quickly as He can, but gods are large but not fast and He has not solved it all yet.  He does not know why.  But He knows Who.

Nethys.  Cayden Cailean.

And Milani, and He's not convinced not-Iomedae.

There is an exchange then of information, among the gods, gathered to confront this threat to all Creation; in the parts of Their wills not bent on probing Keltham's causal surface to sway Him to another path by any possible input.

Irori yields what He knows, taking responsibility for what must have been His part in bringing Carissa Sevar to this pass.  Abadar gives it away, as a partial payment towards that owed for His protecting Keltham.  Asmodeus selectively releases all of that information and only that information which damns that which is good.

And They consider it and think, and in time speak to Milani, in voices that are one and many:  Sarenrae and Slandrais, Gorum and Abadar, Gozreh and Onos, Erastil and Dahak, Asmodeus and Desna:

Your faction repeatedly intervened to protect Keltham, empower Keltham.  None of You would have preferred that Creation be destroyed rather than continue unchanged.  You would have no motive to preserve and empower Keltham if We did not yield, so yield We must not.  And You must certainly have known that We would not permit Ourselves to be threatened by proxy, and that Creation would be forfeit.

Explain the actions of Your coalition, Milani; and We hope that it is not the last explanation We all hear.

Our interests ought not be injured by Our caring for them.  We should do no worse out of these events than if We had been incapable of any action; We should do at least as well, in expectation, than if We had cared for nothing and done nothing.

Then to understand all these events, You must understand what would have been the result if We had all done nothing.

This, then, would have been the consequence of Our null action—