You could say they're alien. Just ... not from the same set (sheaf) of worlds Nita knows.

But by this time they're already out of the demonic languages and into the human-but-not-English languages: Welsh, Sanskrit, Latin, Greek, German, French, Etruscan, Arabic, moving too quickly to see all of them.

"Language reference," Rachel announces, "and ... yes, here's the Sulcaric syllabary." As she reaches for the book, she adds "Is there anything else you'll need?"