I was waiting to catch Friday's episode before giving my 2 cents worth...
KC, since the Nisha/Rohit case has been portrayed as an unsuccessful laggard in all his endeavors, be it in court or his personal life. Never has he been able to achieve anything without help from someone, mostly Siddhi. Siddhi & her silly meddlesome ways have always been shown as the crutch that has propped his spineless form up.
And so it continues...
Richa's truth, that should have rightfully been his to find out, on his own, was presented to him on a platter by Siddhi. All that remains to be seen now is whether he digests whats on the platter & works with it to take it to it's logical conclusion or as always, flings it in her face & continues along his foolish path.
@Sahasra, Ordinarily, I would have preferred for KC alone to tackle Richa right to the end, but if it were to happen as you described, I would humbly accept it as a poor alternative.