"Allspeak," Loki says. "It can't do that trick in writing, but everybody hears me in their own native language unless I'm turning it off to amuse your father. In writing, though, I can actually control 'who I'm writing to' and get a specific single language that way. Do you understand them or should I write you a phrasebook?"
"To be determined." To the Dwarf, "Can you tell me how I go about purchasing or renting quarters for Maitimo here?"
There are people who will do nothing but help them choose between proprietors of rooms, and also everyone reports their prices to a public record that can be found at such and such location and are generally very reliable about pricing as listed so if they're given any trouble they should make it known.
Lovely. "Your brothers are funding this at no marginal cost," she murmurs illusorily in Maitimo's ear, "spare no expense if you see someplace you like."
"I can wallpaper it in illusion, no extra charge? Can't do a breeze, but I can do a day cycle and scenery."
"I can customize it. Treelights, if you want to osanwë me what those look like. Or stars."
"...I'm not sure I'd meet with approval if I wallpaper the pit for you, there's probably other apartments overlooking it. But sure."
And she puts up a splash of stars on darkness, clouds drifting across them occasionally in a slow program, and a view of, oh, how about a meadow, forest and river off in the distance? "Like that?"
Fussing with money fuss fuss fuss. She finds somebody to ask about price fixing.
It's not common but there aren't rules against it. Giving out a new commodity without much knowledge of what price the market will bear for it is a common problem! For a commodity like this with a large possible demand and no marginal cost she might consider pricing it at a cost comparable to these other items, or she can do elaborate things that amount to efforts at price discrimination.
Ooh, benchmarks. She appreciates benchmarks. Are the comparable items such that she will be able to say that she was not flagrantly cheated and also such that she can give out lots of songs before it is no longer plausible that she's doing it to fund Maitimo?
It's hard to predict what Elves across the continent will consider being cheated, but the lowest proposed benchmark is about a fifth the price of the highest proposed benchmark. Maitimo observes that he can probably make use of lots of money if he's going to be building a city, which is what he's going to be doing.
She picks something midrange and inquires about how to advertise.
All right, where does she find a smith-cum-critic to give a free sample?
Lovely. She picks one at near-random, which is to say based on speed of arrival and charmingness of presentation, and puts a song in his forge. (Her forge? Their forge? She can't actually tell. She's pretty sure she's never heard a Dwarf say 'she' about a Dwarf but her Allspeak instance does have a history of screwing up gender. She will wait until she is better friends with some specific Dwarf and inquire.)
She rents shorter-term accommodations for herself with some of the bidding-on-questions-from-her-lecture fund. She does not think Maitimo would appreciate a roommate.
She expects less interest in the other spells, detecting negligible wood, sailing, uncalm water, equestrianism, and need for wind anywhere down here. She suspects that they must have crops somewhere; she's not allowed to copy that song but she is allowed to use it if someone wants to make her an offer on one-time use...? Warmth spells, firestarters?