What does it mean to you to speak in my own voice?

Just that it's you speaking, not someone else claiming it in your name or a reproduction of what you sound like. If you don't have a fixed thing that your voice sounds like, the spirits know and that's not a problem.

If you can't do words simultaneously in different places, it would also work cheat at how well sound carries or just be really loud.

I can create the sound of my voice in four locations;  I would be present in all four to the same degree I am present everywhere in Doriath.

It hasn't exactly been tested, but that should work perfectly. 

I should emphasize, the challenges I mentioned? Stakes can get high. Too high. Anything from bragging rights to mortal combat. You might have a lot of Others challenging you, and it's hard to say which ones or how many you'd be able to keep away entirely.

I will not cede an inch of Doriath or endanger anyone in it, but I am otherwise willing to make compromises.

You do have a lot of leeway. If they insist on something you're unwilling to pay, you can propose a contest where kicking them out of Doriath counts as a win. If the challenger picks something where you're at a disadvantage one on one, you can suggest allowing help from both side's allies. You'll find it much harder than usual to keep beings from getting to you in the first place, but there are other dimensions to make up for it.

In your assessment, claiming Doriath as my demesne makes it safer.

Once it succeeds, no question. The ritual for claiming it is riskier, and it's meant to be claiming buildings at most.

I do think it is worth the risk by far, but only because you're already powerful enough to get away with it.

Perhaps I will consider it awhile. At the moment the risk seems needless.

It's not pressing. I can give you more information on the practice and the ritual; other than that, any other time is no better or worse.

In that case I will wait until I expect Doriath to have need of additional defenses. At the moment the land is safe.

Very well. If it's threatened by the Enemy it won't necessarily be too late; only practitioners and Others can respond to the claim anyway.

And I foresee many Years of peace. Thank you for your explanation. You should before you go learn songs composed here, and teach them to all your people, to keep Doriath connected with the world.

Songs are a good idea. Writings might be better suited, if your culture is recorded in literature and history as well as music.

Writing?

Oh right. The Noldor invented that.

A system of symbols that represent words. Better for this purpose because there can be songs with no identifiable source more easily than books with no author, so writing does more to solidify ties.

It's also much better for a lot of practical uses! You can send information without a messenger having to be the one to say it, you can guarantee that the words you remember are the ones you composed, and it's easier to copy. I should definitely teach some people while I'm here, and it will probably catch on quickly.

If you like, she says skeptically.

You'd be surprised how useful it can be.

For the purposes of Men, maybe. But you are welcome to teach it.

I will.

Now that you know that the real reason for keeping the secret applies even to the most trusted, may we bring more of the spirits from your kingdom to our greenhouses?

Will Doriath suffer for their absence here?

No. When not being used, they're an indicator of how well your gardens are growing, not the cause.

Then by all means, with your oath that the strength they grant the Noldor will not be levied against my people.

I swear. This is going to be a fun one to explain to Nolofinwe, let alone Maitimo. I ask it as aid against the Enemy, and I swear the Noldor will use nothing we derive from these against the people of Doriath.

Thank you.