I thought he assumed the title of Lord and got rid of the family hierarchy, not the title of Lord.
Mao Faust said that he seduced her to get family secrets.
Since she's Xue and was a possible family hierarch candidate it's she could have become hierarch, get the secrets of the ancestors via the worm, and activate the Jialan guards (who I guess who's strength is on-par with the heishous). It's within reason that Lord Hong killed Baochai after getting the Xue family secrets as a mean of tying up lose ends.
>Mirror Worlds
Yeah, you know what. I should always just chalk it up to that. Fucking Mirror Worlds.
I realize that typing all of this is really autistic. I wonder if thinking about all this matters in the end because KJH just seems to do whatever he wants to the story. I'm still a little upset that vamp blood does not intact whatsoever with the heishou sheep mutations. I'm not angry or anything, I'm just sayin. I still like the game and I'll continue playing it despite the weird story decisions KJH makes.