I say again, I don't think they are going to be able to play the gender card much, if at all, simply because no one is going to buy it, even her own side.
I agree with Fistful. The gender/feminist card may not work, but Hillary will play it because that's the hand she has. What else does she have? It seems like every third day she comes out against another policy that was part of why her husband's presidency succeeded. If she can't get herself elected on the basis of being a WOMYN, she's got absolutely nothing going for her.
What I can't understand is why New Yorkers favor her, a true carpetbagger, over native son Bernie.