"I have never heard of Pharasma and whatever that is has not discernibly claimed credit for anything I've previously encountered. Asshole who runs Arda is called Eru and my place is anonymous work if it didn't just emerge without a creator."

"If this isn't an extremely elaborate trap it's one of the most interesting things that's ever happened to me. Also, I'm pretty sure you're not a fae at this point, so do you mind telling me a name I can call you by?"

"I'm Cam. Is that something you're not supposed to ask fae?"

"It's one of the things they say about fae, yeah, if you give them your name they'll keep it. You can call me Samora."

To the bar: "Do you go by anything?" 

Just Bar.

Samora still hasn't lowered her shield, but her expression has been gradually shifting from "confused suspicion" to "confused curiosity". "I don't suppose either of you have anything that would be conclusive evidence you're from outside Creation even given it's your idea?"

I'm afraid my perspective on your own world is limited to things like published works and beverage recipes so I'm not sure what would constitute such proof.

"I dunno, did you change your mind about wanting any stuff? Or are people who can make stuff all over the place there, I wouldn't know."

Hmmmmm. "Could you make a holy weapon? I don't think the Evil kind of demons can do that." Or at least she's quite sure she couldn't enchant anything to be unholy for reasons that seem very likely to extend to outsiders.

"Is that magic? Magic is not, so far as I know, stuff."

Everything that interacts with alignment is in one or another sense magic. She's not thinking of anything else an Evil outsider couldn't make that somebody else could.

That's because she's thinking about it all wrong. She shouldn't be listing things that can exist and  asking whether demons can make them, she should be looking for things that can't exist. Something that would make her go "What in Creation is that?" and accept the answer "it isn't". Something that can't be spoofed by illusions or temporary conjuration. Something that works whether he's creating things from nowhere or teleporting them from somewhere else. 

She has an idea. It's ridiculous, but anything that works is going to be ridiculous.

"Could you create a statue of me made entirely of diamond? I am entirely aware of how insane that sounds."

"No, that's easy, but like if it's full size that's going to be annoying, I can't get rid of it."

He's still saying things people from anywhere she has ever imagined would not say. "I assure you, if it is real diamond I will have no trouble getting rid of it." 

"You must be a lot stronger than you look. Sure." Bam. It is posed just like her at this very moment, shield and all, and it glitters with genuine diamond fire in the cozy lighting of the bar.

That's uncanny. In multiple ways. 

"Thank you. Is there somewhere I can go experiment on this where you're not looking?" Not that she can perfectly verify he isn't looking, but making it more inconvenient can't hurt. "And can I have a diamond file too, actually? I need to scrape a sample off."

File. "You could go in the backyard? Or rent a room if you can drag it up stairs. It's, y'know, solid rock."

"Thanks. Back in, uh, however long the time dilation makes it be I guess." She pockets the file, tries doors until she finds the one that goes to the backyard, then finally hangs up her shield so she can grab the statue by its shield and drag all 600-odd pounds of it outside. 

Samora flips a copper piece several times to pick several different places on the statue and files off a little bit from each until she has enough for a Restoration. She breaks the head off and files off some more from inside the torso in case only the outer shell is real, as if that would make this any less impossible. If this works, Petrai is going to have to wait until tomorrow to recover from his life drain, but if this is real she has a diamond larger than any Golarion has ever had and Petrai will not care about the wait. 

The spell goes off exactly as normal. She hasn't been life-drained, but she can feel the lingering strain in her arms from dragging the statue fade to perfectly rested freshness.

If Cam hasn't been observing the backyard, the next thing he'll see is Samora dragging the statue back inside, opening the door to the chapel and shoving the statue out, then staring at him with more emotions than should be able to fit on a human face. Shock, joy, fear, something like awe and a sort of desperate hope.

"I apologize for my earlier rudeness. You wanted resurrections, right? I think I can get you that. Do you have partial remains or none at all, it's going to matter for who I need to call in."

"The entire planet they were standing on was destroyed and you can't get too close to its unrecognizable residue safely."

That's a lot of war. Maybe enough war to make almost anyone read Evil. Which is both very bad, and in a particular narrow way better than someone who can make diamonds from nothing being Evil because he likes being Evil. 

"There are people who can do it with no remains. They're very powerful and very important but if you can make diamonds I can get their attention. Because powerful spells consume diamonds. If the statue was, somehow, a trick, you should probably tell me now before we waste their time."