She nods and applies herself to her stew, although she pushes the last few spoonfuls silently over to Cambra.  (The leaves are apparently carrot tops- Marcus finds a lonely slice of the carrot itself in his stew- which explains why someone bothered hauling them all this way north.)

The stables are also half-empty, the few beasts there looking as exhausted as the men;  Khalida glances around, makes a couple of hand motions as though measuring something out, and then finds a groom to ask if they can bring the last few closer to the corner stall she's apparently picked out as her channeling podium.

"Y'gonna channel for them?  The poor tired things, I hope it helps..."  (Marcus helps him chivvy the horses to move.)

Some soldiers show up for the channel as well.  Nobody seriously hurt, they've clearly got the healing to keep everyone on their feet, but there are a couple limps and scrapes, and more people who just want to be in as many channels as they can in case it makes them get stronger or simply feel better.  Marcus asks if they've sent to the neighboring forts and to Kenabres, and whether there are any other messages they'd want conveyed; they have and there aren't, though mostly they don't sound as if they expect any of it to change anything.

"I hope this as well- it helps me somewhat?"  She clambers up onto the water trough, boosts herself onto the edge of the stall from there, and carefully stands, hanging onto the post at the end.  "Everyone here who's going to be here?"

People mostly shrug, but after a moment someone volunteers a "Probably? Fuck them if they aren't, it's cold in here."

Marcus looks out the door to check for stragglers and gives her a nod.

She wraps one arm securely around the post and leans outward a little to get a better angle, raising the mask on its cord in her other hand

It's not much, but it's there; nicks and bruises are healed, one of the horses snorts and flicks its tail.

The soldiers do brighten somewhat, and a few voices call out "Thank you, Learned," the groom among them.

Marcus smiles, and takes a step closer to offer her a hand down, having ended up in a more convenient spot for it than Ferrer or Cambra.  (It's a thoroughly engrained habit, and it sounded like she's not so Garundi that he should suppress it entirely.)

"May blessings of all the righteous gods go with you," she calls back, a formula that could've come straight out of the Acts but clearly sincere, and accepts the hand to balance as she hops down.

"I'll take point,"  Ferrer offers.

An appreciative nod.  "If I take the inner side for a while, the Learned can tell me about infernal healing?"  Or Cambra could do it, but he expects he would rather let someone else do the talking. 

Nod, and once they're saddled up and through the gate, she can start out, "so, it's a conjuration spell, first circle- I expect you don't wish the details?  But it's first circle arcane healing, I didn't think such a thing to be possible before I came here-"

"... How??"  He knows enough about what wizards can do to be very clear on how much healing is NOT one of those things...  

"Is it, uh, horrifying in some way..."

"So it's not quite as a regular healing spell, it acts slowly rather than all at once, but there's this planar link-"  whoooops heck that was not a 'how' for 'no I do want the technical details', that was a 'how does that happen'.  She tucks her hands back into her sleeves and takes a moment to marshal the next sentence. 

"It uses devil's blood, so it's Evil for the wizard and the target both."

"I am so confused about why devil's blood heals people!  ... If it has to do with planar links, you could try explaining, though I doubt I'm Cunning enough to make much sense of it."

Also he's mostly looking away from her toward the barrier, and should not get distracted from that long enough to watch any visual aids.

"So, Cure spells are Conjuration- not to say that clerics specialize by school as wizards do, but one can tell with Arcane Sight even as one cannot cast it- and this is actually not obvious why it should be so?  Most spells which handle energy are Evocation, it's only acid which fall under Conjuration- it's been said that perhaps acid spells create the water first and then cause it to take the acid property, like Snowball- um.  Excuse me, that's not your question."

He laughs a little.  "I didn't realize divine spells were at all the same sort of thing as arcane ones!  All right, so where does devil's blood come into it?"  He would like to know about that, rather than about a dozen other theoretically interesting things he can already feel leaking out of his head. 

"Oh, yes, many spells were first made by adapting divine ones, you can still see-  anyway.  So I don't believe anyone's actually seen it yet, but there exists a theory that divine healing opens a very very small very very fast portal to the Plane of Positive Energy, and that's why it seems to be structured as a conjuration-"  she visibly restrains herself from going on more tangents-  "anyway, I haven't seen it cast myself yet,"  a little averting-evil gesture, "but it lasts a full minute, and I'm told the target reads Evil betimes even they weren't strong enough to read normally?"

"...I don't know that anyone I spoke of it tried it on one not Chelish, they likely would have eventually.  ...anyway.  The blood is, um, fastening the planar link- I apologize, that part is very wizard speech- and I don't know how it goes precisely, but it seems likely it's to Hell in some way?  Devils heal from positive just as we do, they're not undead."

He appreciates that she's restraining herself from the clearly endless tangents, but it is adorable that she needs to. 

He does just about manage to keep all the important pieces of the puzzle in his mind at once, and remember to watch the horizon, but there's a bit of frowning with effort involved. 

... And it's still confusing even when he's pretty sure he's not getting anything wrong.  "So... if you did the same thing with angel blood, it wouldn't work? Surely someone's tried. And why would a link to Hell give you any more positive energy than a link to any other plane that's not, uh, an energy one?"

For some reason, that first question makes her wince and put a hand over her face, laughing ruefully.  "So- well.  I think it should work, really.  I- do you know the principle of symmetry?  How, um, how one's right hand looks in a mirror like one's left hand, but turning it any way cannot make a left of a right?"

"Yes!"  That's applicable to swordfighting, so he doesn't have to do any confused squinting about it at all. 

"So there are some spellforms that are partly the same as each other, in the, um, the part that does the thing, and partly symmetrical but opposite, in the part that, um, chooses the thing it does- Protection from Evil and Protection from Good are like that, and Law and Chaos are symmetrical also, but in a different, um, direction, and the elemental planes also come in pairs- energy types are almost the same principle but in a different way- anyway.  It um.  I thought it looked like the kind of spellform that had an opposite."

He nods along with the explanation, then bursts out in surprised laughter.

"...That's how you ended up exploding??  Well, I really can't blame you, that is such a good reason to explode."

"Oh, don't laugh!  I wasn't going to cast it!" she protests, but she's giggling herself.  "I just- wanted to see if it fit- and as I remember, I was then on a bench in the mess looking up at Select Artigas."

"Well yes, if you had cast it it wouldn't have been an exciting new frontier in exploding!"

Then more seriously:  "But please be more careful. You're brilliant, I bet you're going to make some important progress in something, but that does require staying alive for it."

"I wasn't being uncareful!  Everyone says one may do theory to any extent and it's yet only in casting one learns if one has instead invented Explosion."

...she's maybe blushing a little though.