She doesn't push it. She unloads the horses and bundles up a egregiously unreasonable amount of gear to just wear herself for the teleport and keeps an eye on the forest and leaves them be as long as they aren't running.

Taking hands for the Teleport Alfirin realizes that she's never teleported conscious prisoners before and is uncomfortably aware that the half-orc could from this position easily break her arm and probably prevent her from spellcasting.

...Fortunately, that does not appear to be their escape plan! They arrive at one of the regular teleport points and she drops the hands rather quickly. She instructs them to follow and leads toward the keep and the dungeons.

Vellumis is a war camp, not a city; almost no women, no children, mostly humans and dwarves and the occasional exotic beast of burden or war elephant or something visible in the distance. For a war camp it's very very large, much larger than Kantaria, stretching on (when there are no buildings to get in the way, which there usually are) far out towards the horizon. There are walls and more walls under construction, roads and more roads under construction. 

The keep is stone, and large, and very well built, and there's magic shimmering all around it if one has cast a Detect Magic to appreciate it with; abjuration, and conjuration, and illusion and transmutation and even some divination, for some reason. There are guards. Alfirin is not so important they know her on sight.

Iolanda is too depressed to continue trying to figure out what plane this looks like. She's agreed not to spellcast, and therefore doesn't have a detect magic up. She waits anxiously for someone to confiscate all of her things, including her spellbook and her devil's blood, even though Iomedae just said they could keep their possessions if they surrendered. This isn't how she's used to surrenders working and on an emotional level it seems insane to her to allow prisoners to keep their weapons.

Carles is going through most of the previous interaction and grudgingly deciding that Iolanda is right; what he should have done, if he were better, was successfully organize an escape attempt,  but if he couldn't do that he should have cleanly ordered everyone to lay down weapons and cooperate - not because that gets him any concessions from their captors, but because it prevents Guim or Martí or Oriol from doing something idiotic and getting themselves avoidably killed. This is different from a formal surrender and isn't an agreement with their captors and therefore doesn't, at least in his mind, tarnish his ability to make agreements. It was difficult to think through at the time because - well, mostly because his enemies at no point demanded it or anything adjacent to it, and he finds something about their manner of taking prisoners and arresting people very unnerving. Mostly the lack of orders? When Carles takes prisoners he gives them all kinds of orders, which allows them to easily determine what the least dangerous response is, and if they take their chances with some other response then they take their fucking chances and probably die.

You can't really go around being more than mildly annoyed with foreigners for taking prisoners incorrectly, though. It's a deranged response to everything. It's -

- honestly, Guim is right that the reason this is frustrating is that these feel like the sort of people who ought to have honor, and clearly have some kind of system that's meant to serve some kind of purpose, and it's frustrating that whatever positive qualities the system is meant to have are not comprehensible or accessible if you don't have some necessary background information he doesn't have.

Probably most of the prisoner captures Carles has presided over would appear insane and deranged from the perspectives of foreigners who don't hold that the most important thing for a man is that he die in battle.

He's going to shut up for a while until he can think through his ongoing strategy a little more calmly and a little less like a child who wants to respond to everything with "it's unfair".

It's not really very much like the camps where they keep captured orcs - it is, in several ways, the complete opposite - but that's still the first thing he thinks of.