She wants it VERY badly and right now.
Four years is a long time when she could be raking in the money and accumulating power. The sooner she can get started with the mega-bucks and mega-power, the better.
On the other hand, if it must be postponed, it must. Obama's ambitions must be torpedoed, and plenty of preparation can be done in four years.
It won't be too late in 2012. But she will have to make up for lost time, and that will intensify efforts in the meantime.