"There is," he says to the demon, "a way to travel between worlds without being summoned. I will trade you the knowledge of how to make it for three of them and some help identifying a habitable planet in our new dimension."
"They didn't bring their Valar," blinks Elspeth. "The Shadow Valar were left floating in vacuum and very confused." (Shadow shall henceforth refer to the world between Aurum and Edda and Materia while Independence shall refer to the planet, her magic helpfully footnotes.) "Uh, we'll want to unsummon the daeva Yeerk children and then have them resummoned by someone working with Tide and brought back there, or maybe to Luster, which is an Arda with a small Yeerk population for irrelevant reasons in a neighborhood that would be easier to set up safely-with-respect-to-daeva. The Shadow Valar had different questions from a standard set but my results were ultimately similar."
"The relevance lies in the fact that our preexisting neighbouring Arda is another of the same type," Esarkan clarifies.
"Ah," says Elspeth. "Well, I should fix its Valar anyway and possibly also its Melian if she's still around."
"My husband says you may fix our Valar," he says to Elspeth. "I can take you there if that's convenient."
"Is it one hop from here? If it's farther than that I'd like to know the intervening steps."
"Maitimo is my husband," he says. And now they are standing at the Valinor-facing end of his covered road across the Helcaraxe. It's stunningly beautiful, all sweeping curves and graceful arches.
"Okay, good. Should I meet you somewhere after I talk to the Valar? It'll take a few hours, Valar start out very confused."
"Sure."
And she writes a little note to Cam and then teleports to the local Taniquetil and introduces herself and explains things.
Meanwhile:
Almost immediately after the unexpected interdimensional visitor arrives, Corino goes to Independence and says he has urgent news for the King.
"A representative from the interdimensional meddlers showed up in Nuime asking to speak with the Emperor," he says. "Esarkan would like to know if we have your permission to admit we've met you. If it comes up unavoidably before I return with an answer he's planning to consult Tivarante Maitimo."
"I expect it to be unavoidable. Any sense of their inclinations? Are they being friendly?"
"They're being friendly to Nuime; how friendly they feel about you wasn't clear as of my departure, but I could go back and check. There's a day and a half left before my son either comes up with an untraceability power or doesn't. Besides waiting for that, and Esarkan making it clear that he considers you a neighbour and ally, what can we do to help you?"
"Their preferred method of permanently killing Elves is to put them in a black hole, which Taliar could probably undo if he pleased; they have others which I doubt he could counter."