Kexin felt her vision cloud for a moment. Her family had already been through a bloodbath when Yor ascended over 55 years ago. Her survival was a mystery after she emerged from the formations that bought her more time.
While they worked, she essentially was protected as to interfere in such formations had drastic downsides that could backlash to the person picking them apart. When she emerged, her father was dead and all by 1 sibling.
She expected to die, yet was allowed to go to the Moebius Sect with her close followers. Those made up the core of the Demon Hall administrative personnel 20 years later.
Even after all of that, she knew it was not only her niece Valkyrie was referring to. Yor and the other demons that ascended were in the Floating Isles. While there was no official power of the Demon Empire there, the clans banded together under the royals that came up later.