Reluctantly, I also have to agree that KK is likely in PC.
I say reluctantly, because KK being in PC means that a deal has been struck with her.
The fact that a deal has been struck means that she's not going to pay in full for whatever role she may have played in the planning and/or murder and/or cover-up of the crime.
Even if she's involved, she may get off entirely. That would not be justice. IMO.
I want every person involved in KB's murder to be held 100% culpable for their role and to receive the max sentence possible under the law. That's just me, though. I'm good with others feeling differently.