Subject: Well, the situation is a bit different.
Author:
Posted on: 2015-11-19 22:53:00 UTC
As I said, in-universe Sue was speaking English in an English speaking world (or her own language in her own country) and everyone in Middle-Earth speaks Westron, thought that is "translated" in English for the viewer/reader.
Then Sue falls in Middle Earth and shouldn't be able to understand anyone there due to language barrier. That's how it is supposed to work, on this I obviously agree with you.
However, the Agents are at least partially meta. They're not part of the fic, as shown by the fact they can read the Words. They are "inside" the fic, alright, but they pretty much share the readers' viewpoint - that's what they're there for after all.
And they witness everything happening as described by the Words, that often tend to act as a literal genie, like green eyes constantly described as "emeralds" actually becoming emeralds. Using that, and then claiming that the dialogue written in English isn't literally heard by the Agents in English feels like a contradiction to me.
And... This is getting very meta. And very confusing.