[quote=@Valiance]
<Snipped quote by Etcetera>

That sounds like a conversation ender, but I have two questions. First, is Faering free to use your power for the task ahead? And second, after taking down the heralds, will the beast slumber for eternity for certain?
[/quote]

I'm afraid the answer to both questions is no. The half-dragon must rely on her own power, and at best, you will have delayed the unknowable's awakening by some amount of time. Perhaps forever, perhaps a day.