The fact that she refuses to retire tells me that she’s confident about the fix being in for 2016.
...or she might simply be narcissistic, refusing to follow marching orders. If Hillery were in office she'd need to double security...
I believe it tells us how little respect she has for The Won.
Ginsburg has been especially critical of many of this Administration's actions and positions. She was truly offended by the President's treatment of the court after the Citizens United decision. Given Ginsburg's reputation as a knowledgable (though liberal) jurist, I imagine she recognizes Sotomayor and Kagan for what they are -- hacks.
I believe she's taking her chances on Hillary. And, if that doesn't happen, she can live with a Republican naming her replacement.