WHOOOO . wait a minute here! Everything you do, every choice you make, is a DIRECT reflection of Who & What your are! IMHO............
And KC has made that choice, long ago. KC compartmentalizes her life and actions. Her current actions reflect this. The murder has been tucked away in her mind and she is relishing in the media attention, the attention from JB, the jail staff and the courts as well.
She follows the path she creates, never mindful of the wake of disaster she leaves behind. As has been discussed in numerous threads, she will play the part SHE thinks will influence others to believe the part she is playing.
In some small way, we all play a part in life everyday. Difference is, we abide by society's rules and don't murder anyone, much less our child.