IT WOULD NOT BE FUNNY and separately would be spectacularly unwise, but now Merrin is quashing a half-hysterical giggle rather than all of the other things, which is - actually maybe an improvement, so thank you, Kalorm.
Alternate-Estha is right. She can't run a social deception on him. And he does, in fact, seem to be aware of the concept that someone who wasn't from his horrible doomworld-timeline country might not consider his horrible doomworld torture god to be very appealing as an employer. His epistemic framework is not so thoroughly warped that he's incapable of noticing that fact.
And it does not, actually, matter at all if Merrin predicts that the doomworld torture god to, what, grab her ""soul"" and yoink her to the doomworld torture afterlife? And, what, torture her more because of her decisions here and now? Merrin is not under the illusion that she could continue to be heroic in any way after that happened, if it were to happen, but it hasn't happened yet, and the mere threat that it might happen is not, in fact, going to budge her at all.
(That part is fine. It's not socially awkward at all.)
It is kind of a relief that she hasn't already figured out a way to send a message to Infernal Cheliax. She's not being deliberately unhelpful on that front, she just literally doesn't have the information Estha wants, and her genuine belief is that the most promising way out from here, if it exists at all, if this game is winnable, is that Estha will be able to think of something previously-unthinkable once he's no longer trapped in the epistemic framework of needing to convince himself he wants to work for an Evil torture god.
She meets alternate-Estha's eyes.
"You're right. I don't want to go back to your world and I don't want to work for Asmodeus. In the culture I remember living in, it's a bad thing when people who don't want to be hurt are hurt anyway, and I don't want it to happen – not just 'not to me', not just not done by me, I don't want it to happen at all, and in my culture that's how any sane person would react, it's not even complicated. I believe you, that Mariona agreed to work for Asmodeus, but I don't think it was because she wanted to hurt people. I think she didn't see any other option, and didn't think that what she wanted mattered, and didn't think she had a choice. But it kind of seems to me like this whole - game - is set up so that I have a choice now."
So that both of them have a choice, but one of the pieces Merrin's opaque social intuition did venture is that she might not want to lean very hard on sounding like she's personally directly trying to persuade alternate-Estha to betray his horrible doomworld torture god, because - ugh, ""loyalty test"" captures it and UGH THAT CONCEPT. Her opaque social intuition also thought it was important to sound calm and measured and not emotional, which is fine, all of her emotions are way over there on the other side of a glass wall.
In my culture there's an obvious story, Merrin imagined saying thirty seconds ago, about what a dath ilani protagonist does when they learn that Hell exists. But that seems like an extremely high-variance thing to say and also she's...not...actually sure that she can be the dath ilani protagonist that her narrative-trope-sense would slot in here. And her opaque-social-intuition thought she should keep this pretty short.
Pause.
"...I think it's probably a good idea for you to have your headband back to think," because she is imagining having this all the time and suddenly being without it in a high stakes negotiation and OOF, "but I'm probably going to be a lot more of a mess about the thing where Hell exists once I take it off."