The auroras ( in russian zoryas) are the morning, evening and Polar star (as depicted in the nemestice logo)
There are in the sky three little sisters, three little Zorya: she of the Evening, she of Midnight, and she of Morning. Their duty is to guard a dog which is tied by an iron chain to the constellation of the Little Bear. When the chain breaks it will be the end of the world.
Sounds familiar? Gleipnir and fenris are this Dog and chain. This event has to do with everything hoodwink hinted at in her voicelines, that fenris has escaped and is coming for the heroes in Dota
So either Dawnbringer( Valora -aurora) is supposed to be the red maiden and is supposed to get Fenris back, or we get a new hero called fenris and a new hero called the red maiden ( or all of the 3 sisters)