I told everyone a long time ago, this goes to the Clintons.
That's the only thing that would make Miller feel safer in jail and the only reason the Old Grey Whore would let her sit in jail.
Cooper's wife (Clintonista), his sister (yep), don't have to tell you about Wilson (Clinton/Kerry campaign) and who had the most to gain from this.
So Cooper mentions Karl Rove's name, but he's not damaging him fatally. Just that comment about "I said too much".
Miller, OTOH, is silent as a sphinx. You're saying the reason for her silence is that her info came from someone near the Clintons instead?