She’s the mother of his half-siblings and therefore probably the closest relative who isn’t in jail.  

The Night King is not a good character. We know nothing about him other than he is a force of nature. I'd rather he get dispatched so the real war is dealt with. Cersie has it coming and I can't wait to see it

The Night King doesn’t feel like a villain.  He’s more like a natural disaster, or Godzilla.  I like that he didn’t start explaining himself in a pleasant baritone.

author right now:

And the new Manson is out today. It’s good but not great.