She would like them alive where that is reasonably safe, to be questioned and executed in an orderly fashion rather than simply butchered; she has encountered cultists who like taking hostages and announcing that the hostages are the real cultists, and it's a primitive tactic but if you were in enough of a hurry it might misguide your blade. For the same reason they are accepting surrenders. Let's try to surround them like so.

Then her soldiers will ride around into the requested positions. The dragoons dismount and string their bows, the clerics cast Bless and Magic Weapon, and then-

One of the biggest advantages of cavalry, second only to their strategic mobility, is how quickly they can cover ground when they're in a rush. There's only a handful of moments between when the suddenly-panicked lookout frantically shouts a warning at her arrival and when she and the lancers reach the lip of the depression. Laid out below them is a haphazard array of tents and makeshift shelters, each seemingly set without a single thought for the location of their fellows, and a few dozen men frantically scrabbling for weapons. There's a number of scythes and glaives, of course, but less so than usual for a group of cultists of this size; many of the weapons they're reaching for are instead crossbows, spears, swords, and daggers. There are not any demons immediately obvious.

Ky stays on her horse; her domain sense reaches far enough that there's no advantage to being on foot (she's not faster than a horse yet, and in particular isn't fully used to being faster than a normal person yet, though admittedly she's also not used to riding). Paper lance with a forked tip, aimed at pinning cultists to the ground so she can cocoon them, off-hand (she no longer has a real "off-hand") wielding the angel blade at anyone who attacks her or her horse from the other side.

Then she and her soldiers can ride them down! There's a horrible moment where one of them channels close enough to catch her in the radius, but while it's surprisingly painful for her it proves much more effective on their own comrades; some of them drop on the spot. One of her soldiers got knocked off his horse, but the enemy was unable to exploit this to go after him while he was down and he's able to gingerly get his feet back under him. Two of the horses, however, are dead; one from the channel, and another from a lucky hit from a glaive that cut straight through the spinal cord. There are no more cultists attempting to fight back.

She hops off her horse to go about tightening cocoons. "Is it worth dragging the dead horses back, do people eat them in this country?" she asks her second-in-command.

"I don't have much of a taste for it myself, it's leaner and tougher than I like. But in general, certainly."

The living cultists she doesn't care to drag; she starts rigging up ways to attach them to the sides of horses in their cocoons. Any of them have anything to say for themselves?

They're not being very cooperative. Most of them are terrified, but a good third are a mix of angry and defiant. A couple of them have knives inside the cocoons and are trying to use that to cut their way loose.

Well if they're going to be conveniently making cocoon holes exactly where their knives happen to be she can yoink the knives.

Wait no they were using those-

Nope! They're going into Garms's stash to be issued to crusaders! Any other stuff they want her to take now?

...One of them has a second knife but he's going to save it and hope she gets distracted before she gets around to killing the prisoners.

She has no magical ability to detect secret knives.

Home they go, dragging the horse corpses and toting the cultists in their cocoons.

The trip back to camp is slower, between the people who have to now share horses and all the extra loot they're carrying and the horse corpses and the cocooned cultists, but they can still make good time and are not ambushed en route.

If the cultist waits until they're riding off to cut his way out, and tries to pry apart the papers when feasible instead of slicing them, can he slip out without her noticing?

Hahaha no she can feel it as soon as the paper shifts. She'll hop off her horse to go divest him of his knife.

Fuck. He tries harder on principle, but it's not like he was able to escape before he got himself trapped in a cocoon of paper that she controls with her mind. She can get another, smaller knife, and this time disarm him for good.

"Nice try." Back on her horse with her.

And nobody else manages to make a credible attempt at escape, unless you could struggling to no avail with their bare hands as credible. The lookouts at camp fetch a paladin to check them over for infiltrators, and then once they're cleared her mission is officially successful. 

Woo! That wasn't nearly as bad as she was expecting!

Is she going to object to them taking the prisoners off her hands? They'll try to get any relevant information out first, of course, but being a demon cultist is a capital offense in Mendev even if they didn't participate in sacking a city.

She understands that, she just wanted to make sure they could sift through them for anyone who hasn't in fact committed a capital crime, like if they were kidnapped or something.

Interviewing cultists is already thankless work if they don't have to sift through the inevitable lies that they were only there because a succubus mind controlled them into it, but luckily the crusade has an entire separate group whose job that is and they can make it their problem instead. They can head off to do that without complaint.

Mission accomplished! Yay!

It's not a glorious victory of the sort that will be spoken of in songs and stories for years to come, not like the miracle at Kenabres, but - soldiers fight much better if they think they're going to win, and one of the best ways to foster that impression is to keep winning battles without taking heavy casualties. Over the rest of the day Kybele might notice her fame trending up ever so slightly faster, as rumors spread through the camp, or she might not; even without it she's still the recipient of far more fame than she's ever had before.

It's getting harder to notice little upticks. Maybe Nenio can get her some sort of standardized strength test.