And he's very decided against drawing Loki's attention to the fact that, one, she considers them having potentially-limitless powers to be an unacceptable risk, and two, unless she is planning to seal them off from the galaxy Fëanor is really guaranteed to at some point have potentially-limitless powers.

And you wouldn't decline to bring back from Mandos anyone who knew too much, or anything like that?

Not unless I had reason to regret telling them what the symbols meant and no more humane way to address that.

How long would it take you to communicate meaning of symbols if, say, Morgoth came here?

I gave Lúthien one of them. Took about half a second. What I don't know if how long it would take you to correlate the meanings with the spell text.

Hmm. So lower bound of two minutes, upper bound unknown with no good way to test it. Even two minutes is probably too slow if the outcomes we're really afraid of come to pass, and it'd mean you had to stick around when for your own safety you should probably instead be acting during that time. I am not sure it's worth it.

All right.

There's been encouraging progress on artifacts for true sight, you should stop by sometime so you can get the update from my brother.

Sure, when's convenient?

I'll ask him to get in touch with you.

Okay. She waits.

Curufin gets in touch that afternoon. They are making progress on true sight; the range is only a hundred feet, at the moment, and the complexity increases with the cube of the distance, which is the worst kind of algorithm that commonly crops up, they're looking for a more efficient one.

That's still way better than nothing, since she can pop around a hundred feet at a time.

Well, it's all hers and they will continue work on it. He expresses this a little distantly. They could probably get it up to a thousand by brute force.

"...thanks. Are you okay?"

"I am, thank you. I'll continue to keep you apprised of our work."

They don't interrupt her, though occasionally there are packages at her door for transit to Mithrim or Tumunzahar.

Which she will happily pop wherever they go.

The Nolofinweans ask about rings of true seeing. "I'm not sure what answer I expect," Fingon says. "Maedhros has been exceptionally conciliatory, but on the other hand -"

"Well, I'll pass it on." She does.

"Our pleasure," Maedhros says, "though they can't teleport with them, they'll probably want to trade these out for the better versions as soon as we have it."

So Loki delivers some true seeing and this message.

Fingon sighs. "Thank you very much. Are you all right?"