Her picture IMHO exudes strength, conservatism and a readiness to serve the American people on an 'as needed' basis. I look for her to accompany the President when necessary and to meet with the wives of dignitaries, but that's about it. I definitely don't see her becoming much more involved than that.
I really anticipate that she will stay out of the public eye more this time around than before. Also, if she's criticized, by her picture, she really doesn't care. Her husband the President, IS going to accomplish what is needed for America to heal.