"I think in certain circles they call that 'kill-stealing'," El says, letting the spell she had ready settle back down into her throat like a mis-swallowed pill. "In addition to breaking down the door, even. Bravo. I'd write you a thank-you note but I'm afraid I'm fresh out of embossed stationery."

"--Did you--want to kill it? --Sorry about the door."

"I was terribly excited to kill it. I just love it when extremely powerful and violent things enter my room without permission, you see. More particularly Aadhya Iyer loves it when extremely powerful and violent things leave useful, not melted remnants available to use in her projects! - sorry, am I ruining your bit, let's see if I recall my lines. 'Luciiiiiia! Santa Lucia, my SAVIOR -'"

"My bit is killing things, it seems like it not being ruined is part of the problem! D'you want some goo."

"You're the alchemist, is goo useful for anything besides making my entire room stink to the point of my lunch threatening to join the goo party?"

She pulls a jar of something vaguely pearlescent out of one of the giant pockets of her cargo pants. "Healing salve. How d'you even scavenge a soul-eater for parts, I've fobbed carapaces and stuff at artificer-track kids sometimes but I didn't know you could do anything with an insubstantial." 

"I've a spell for disassembling one. Very niche. I will most likely now never cast it unless I have the fortune of a third powerful violent thing entering my room and it happening to be a soul-eater again, and also Aadhya will not be making a wisp patrol our hallway." A sigh, somewhat choked by the stink. "I haven't a recipe that uses goo to turn it into healing salve, but perhaps someone has and will trade me, or will trade Aadhya after she's had her cut at least."

"--No, the goo already is healing salve," she clarifies. "My mom's recipe."

"- ah, you didn't mean you were generously offering me some of the spoils currently seeping into my floor. There are so many kinds of goo, you see. - I don't have anything to put some of your much more useful goo in at the moment."

...She gestures with the jar. "It comes with its own. It wouldn't be much of an offer, the goo in your floor!"

"If soul-eater goo turned out to be useful -" This is a pointless argument. She will stop questioning the gift and take the jar, the whole blasted thing, which is really a very generous compensatory offer though she's heard Lucia brews the stuff by the barrel. It goes on her desk and is wrapped in old homework tied in place with a bit of string to give it a fighting chance should it fall to the ground. And then she will turn to her void and say, "I want a cleaning spell."

The void spits out something at her. She picks it up, looks at it, and hurls it back with unnecessary force. "Try again," she hisses.

...Lucia observes this with a sort of reserved concern, and then starts fitting bits of the door back together to mend-and-make. 

Well, that's very decent of her. El will not question this. She looks at her replacement cleaning charm and hurls it into the void too. "Not the bloody mortal flame spell! A cleaning charm!" she snaps at it.

It tries again, to no more avail. Fling.

She turns around so fast she almost bangs her hands on the door bits she's holding. "You asked for a cleaning spell and the void gave you mortal flame?"

"It's not very bright. And has a terrible memory, it gave me mortal flame last June." Skim. Fling.

"I--"

beat

"That's so cool. --I bet mortal flame would work, actually, it doesn't hurt the infrastructure."

"I will bear that in mind if ever I need to clean up soul eater residue with someone else's mana, shall I." The void coughs up another book. "- No! Just a spell to clean! My! Floor! And get rid of the smell! None of this nonsense!" she says to it, shoving the offending book into the void again.

Lucy snorts. “How about mine? I’d do it myself but, uh, I tried to wheedle the void for mortal flame for like a week before an upperclassman told me it hadn’t been translated into a language I know.”

"- how about your what, your - cleaning spell?" After all, last time she thought she knew what Lucia meant by something she was wrong.

She holds out her hand. "I have spare mana."

"- have you. Capital. And you're just thrilled to pieces to have a demo?" Could this be a weird trap. How could it possibly, really.

"I wanna see mortal flame!"

"Well then, it would be my pleasure." She holds out her hand, only slightly jumpy about the possibility that Lucia will decide that El is laying a trap and decide to attack her about it.

Lucia does not attack El over it. Lucia passes over a chunk of mana that--isn't totally unreasonable, considering that the common knowledge about mortal flame doesn't have all that much about how much mana it costs besides, like, "a whole bunch."

Well. El appreciates this but not enough to not keep the change.

"I got it in Varhadi - that's a Marathi dialect - if this means you reckon it should be seen and not heard," she warns, backing into the hall so she can flame the whole room.