Unfortunately Jim has said things that make me think he dismissed it too.
Yes, I remember having read some WoJ about that too, but JB is not always consistent in what he says, and until all is said and done I refuse to believe that the favour thing was for nothing.
I think this one is strictly about power. I don't think it has anything to do with anything other than will and power. I don't think fairy stuff has anything to do with it.
Now should is entirely different.
I disagree. Of course, i don't have direct evidence either, but i don't think a WK can directly turn against his queen unless said queen does something that give him the right to do so. But, about that, i noticed that this time Mab did not ask for permission before stepping in Demonreach. She had done it before.