In a buffer zone surrounding the portal or if they cross through it they can't use any magic. You shouldn't go through, the other side's vacuum and not safe for humans even apart from the daeva.

"If we're not supposed to go through, how are we to verify that you have them?"

- do humans have really bad vision or something? I can lend you mine. And now they can see astonishingly far, very clearly, and see a couple of distraught daeva. But also you could conjure for it, presumably. Or have daeva staff go through.

They look. They thank her politely. They ask her where the other angel and the two demons they wanted are.

Haven't got them yet, in the case of the demons; already agreed to go home under a binding prohibiting her from ever leaving Heaven, in the case of the angel. That I understand you can see from the summoner?

"Yes; we can tell you haven't summoned anyone."

Oh, no, Ambela did. I don't think I could. I don't think I'm relevantly a person.

"Where is Ambela?"

Milliways, at the moment. I could ask her here.

"We actually need to see her next to the criminal she summoned to verify the binding applies to that one."

Define 'next to'.

"...Usually it's 'have to see them both at the same time' but I don't know how that interacts with the vision thing you're doing."

Let me see if I can manage it with portals so as not to yank people between planets again. 

And she consults her soul alt and after some wrangling there are view-only portals to the angel in Heaven and to Ambela in Tirion - Ambela will you please step through into Tirion Milliways doesn't let us do this kind of nonsense -

Ambela obliges.

Does looking through two portals at once do it?

No. Also now the salon angel is annoyed about being unexpectedly viewed at home; she thought she was done with this.

Can they conjure for the salon angel's current summoner.

Yes, but that just tells them that she looks like this person. They don't want to be fooled by twins or anything.

She thinks they are being a bit ridiculous and if they don't want to accept this as confirmation then they can consider the arrest unconfirmed. She's going to go get the demons now.

Elsewhere, GCP representatives complain to Maitimo that this is not what they had in mind when they dismissed the demon who holed a planet on his say-so.

"I'm really sorry to hear that. One nonviolent offender you were unable to arrest has now been arrested in a manner which is not compatible with extant verification procedures? That sounds, to be honest with you, like the kind of complication entirely typical of attempting to integrate two justice systems and expand law enforcement capacities to three new dimensions. I've been elsewhile impressed by your contingency planning; am I right in assuming you had a contingency plan for complications like an unconfirmed rearrest due to differences in procedures?"

"We consider rearranging people's faces to the point where their families can't recognize them a violent crime whether it's done by magic or scalpel," says the representative. "We were expecting that if someone is arrested, they could be presented for noninvasive parlor trick confirmation of their bindings whatever the standards of prisoner treatment might be. If she can't be shown standing next to her summoner safely bound, she has not been arrested, she's been let off with a warning. If we can't assume you'll securely hold prisoners we can't reasonably cooperate with you on, well, holding prisoners."

"Keeping prisoners in their native realms is significantly more secure than any binding; no occasion could conceivably arise that would tempt the summoner to snap the binding or dismiss the daeva early, the prisoners are not in contact with anyone who it is possible for them to harm, and cooperation with law enforcement on the part of the daeva is substantially improved. We can work with you on mutually satisfactory verification procedures, but I hope we are not in disagreement about whether, assuming the prisoner is contained as described, she is securely held." 

"You should have explained that this was the plan in advance."

"I think you may be misunderstanding our relationship with the gods. They're gods. They do what they want. They are responsive to objections, but to a point. It will be damaging to future cooperation between our peoples if you treat them as the law enforcement branch of my staff."