Well, if everything goes really well for you, as you define that, maybe you could become such a high Power of Hell that your mother and sister would no longer fear being Resurrected, knowing you would protect them in Hell even if someone Maledicted them or they accidentally transgressed.  They would be told that in Axis, and rejoice, and return to finish out their lives in Golarion without fear.  Maybe travel by Gate to come visit you.

...and does Pilar's curse expect that to actually happen.

That's a bit of a silly question, really.  If Pilar's curse answers 'no', Pilar will run off to tell the Most High that Pilar's curse admitted that Cayden Cailean wasn't really planning for Hell's victory the way Carissa Sevar envisions.  And if Pilar's curse answers 'yes', Pilar will run off to tell the Most High that, and the Most High will conclude that Pilar's curse is lying, and stop believing everything Snack Service said about Pilar not being used against her Lord.

Keltham would, if I told him what you just said, tell me about some Law I'm too weak and distraught to prove, showing that - that what I think of you if you refuse to answer, should be somewhere between 'yes' and 'no' because, if you answered truthfully, it would be either of those, at some probability...  No, that's only if I know you'd be answering truthfully, and then if you said, yes, sure, that would happen, I would have to believe you.

I can't - think of what the Law-fragment should be, if you might lie, but - it shouldn't be possible for you not answering, to make sense, if we're both ilani, or gods - I should just deduce, what you don't want me to see, from your not answering -

It wouldn't be possible for that to make sense if we both trusted each other, is what Pilar is seeing.  All of this is ultimately happening because people can't trust each other.

Even gods can't trust each other, sometimes, now that prophecy has been shattered.  If it wasn't for that, Nethys could just tell everyone how it would go, and everyone could just go to where they'd end up going, without there being any conflicts between mortals or gods along the way.

Like Keepers would, the true Keepers out of dath ilan.

Maybe.  Pilar's curse has never really seen those Keepers any more than Pilar has.

"Give me hope," Pilar whispers, knowing as she says it that she's asking something a Keeper would never ask, never.

Well, it's definitely true that Axis won't have told Pilar's mother and sister, as yet, any of the things that would be forbidden knowledge to return to Golarion, or let their minds shift in ways that would prevent them from returning to Golarion.  Not in a case like theirs, where they're people obviously of interest to high-level clerics, where somebody might still resurrect them after a year or two, if conditions in Golarion changed.  Pilar's mother and sister would be in the parts of Axis that were made for that purpose, that pretend to be mostly mortal, for petitioners who might yet return according to Axis's prediction markets.

...why, why would Pilar's curse, tell Pilar something like that, which only worsens the pain and makes it take longer to subside, just because Pilar was stupid enough to ask.

Does Pilar's curse hate Pilar for being contemptible and weak and stupid, will it serve Asmodeus if she's taught a lesson about that.

And if her curse said that there's a chance that Pilar could really do it, become a true ilani and then a Power of Hell; and that if Pilar then willed her family able to return to Golarion, she would be able to accomplish as she willed?  Because that above all, Keltham said, is what Keepers gain in exchange, if they succeed in changing themselves, to change the world and not only bear it witness?  Would Pilar believe her curse, if her curse said that?

"No," Pilar whispers.

Would Pilar believe Pilar's curse, if it said that it would serve Asmodeus for Pilar to believe that and chase after that hope?

"Yes."

"But that's not why Keepers believe things."

Pilar's curse sure has been dropping a lot of hints that it might actually be like that, though!

And Pilar might start thinking that's what a Chaotic Good curse might do in this situation if it was all actually true, given that it's clear why Pilar's curse couldn't come right out and say it.

She can feel the ember of hope flaring up in her heart and it burns her, painful like a sword thrust through her, agonizing like being told by her superiors that she made wrong choices from being a wrong person.

"You're cruel," she whispers.  It is heresy that she says the words so, when she was given exactly what she should not have asked for and now owes favor for it, it is heresy to call that cruel and say so like it's anything but a compliment, but she wants to hurt her curse back if she can.

From the beginning, nothing was said of what would become of Pilar.

"Well, I have to say, this doesn't portend spectacularly well for everyone else becoming Keepers."

Pilar keeps her head down, facing the floor along with the rest of herself.  "Do you know - how to correct me.  How to make me not be weak, wrong, anymore.  Subirachs doesn't know how to do that, I don't think the Most High knows how to do it or she - wouldn't need Asmodia to teach her successor - you're the only one who, might know how."

"I don't know. It seems reasonably likely I'll instead make you worse. I asked if we had enough Modify Memory I could undo you if I destroy you but we don't, not in the whole kingdom." She did acquire the supply that they had, just in case. "What do you want about seeing your family? Is it really about the souls, would you feel all right if we go grab and Maledict a couple more people than we otherwise would've bothered with?"

"Of course it's not really about the souls."  For the price she's paid, she's at least listened to Keltham and tried to master the art he taught, and delude herself no more.  "I loved them.  I shouldn't have and I did and I lied to myself about it, and it serves Asmodeus that I can never see them again."

"I don't want to hope, don't want to go on wanting to see them, don't want to go on loving them, it hurts and also I really, truly, actually do not want to be a bad slave which hurts worse."

"When you say it like that it sounds like a very simple problem, actually. You love them, you want to stop. It would astonish me if Cheliax didn't know how to achieve that. And also it'd astonish me if that's really the whole problem here."

"Hell knows how to achieve it.  I'm - not sure, Cheliax knows, how to torture it out of me -"

"What do you mean, it's not the whole problem?"

"I don't know. If I had a not-loving-your-mother potion, and you drank it, do you - anticipate no further problems, at that point?'

"Do you think I have other problems as large as that one -"

"I don't understand what you mean."