In the first place, no one is proposing a call for a "con-con"... see Post 2... and also see the Constitution. Nowhere does it provide for another Constitutional Convention. As a matter of fact, language that would have allowed for another constitutional convention was refused four times by the Founders before they settled on the 143 words that now comprise Article V.
And in the second place, how do you know that she isn't?
She may be, but not publicly. And that's disturbing at this time because she really needs to get the word out before the 2014 elections.