I will.

...

I'm half tempted to suggest telling people anyway on the grounds that stealing a Silmaril from someone who takes it into their heads to hurt your cousins is probably easier than stealing one from Morgoth, except for all the myriad and excellent reasons that that would be a profoundly terrible idea.

The Oath is to kill people who withhold a Silmaril, not just to reacquire the Silmaril. 

That would be one of the reasons.

The Elves all already know; it's Men who don't, mostly.

I shall make a point of avoiding mentioning it to Lady Hareth.

I appreciate it. Wearily. They say dissent is healthy for rulers.

I like her. On a personal level. I can certainly understand why you would find her trying.

It's hard to like someone who actively dislikes you, but I respect her.

Makes sense. I've never tried liking someone who disliked me but I would expect it to be difficult.

I also appreciate it when people believe me about the existence of our enemy, so now that she's seen him maybe we'll get along better.

Who knows?

Good luck with your projects, Illia. 

Thanks. Let me know if there's anything I can do where my lack of Doomedness would be instrumental.

I will keep that in mind.

A few weeks later, Illia says, Odette's finished building.

...that was fast.

She is extremely magic. It only took her a few hours to put up a giant dome over those spiders!

Lovely. Well, if there are survivors of the fall of Dorthonion they'd be the first people to relocate there. Planning to learn statecraft on the job?

And out of books, where possible, and from examples remembered from home. I'm not sure what other choices I have.

You don't actually have to start immediately, you're welcome to sit in here listening for a decade first.

...You know I'm going to be running a human city, right, humans don't have that kind of time

You do now; as I understand it you are all immortal.

It's going to take us a while to get used to that. And I suspect we're going to be more immortal behind enchanted walls than in hastily-erected houses by a river. To go by the Dorthonion refugees as an example.

I am favor of you being maximally immortal. You are very young for the amount of power you're wielding, though.

Even by my standards. Of course, it's hard to argue that Odette isn't even more of an egregious example. Still. I'm doing the best I can.