To me, the "mother of us all" line vividly reminded me of the Brush Gods from Ōkami: they all address the player character Amaterasu as "mother", many with the specific formula "Origin of all that is good and mother to us all".

Not suggesting that Fubuki is a dog who is also a god, or that she can unlock esoteric magical powers by finding specific other destroyers who exhibit them, but the connection lingers in my brain. (Maybe she somehow takes up the mantle of sun god if Balder ever retires...)