Board Thread:The Last Sovereign Discussion/@comment-27713488-20181103233945/@comment-36874080-20190803113740

I don't think the Mother is the older sister; they're of different races and she seems to care about stuff. Even her xenophobia is because she cares others might hurt Elves.

Tertia was mentioned by Wendis as impersonal, so if she's still a person she might be a candidate. Or maybe it's a character we don't know about. It could even be Zelica, if it's possible for Mithyn to visit her prison.