Obama is her greatest gift. Once he sucks all the oxygen out of any Hillary alternatives, the press will start asking him the questions they should be asking him now and he'll fold like a cheap lawnchair. By then, there will be no time for any alternative.
As long as he folds gracefully, he might even get the veep slot or some other high profile appointment as a reward, though I doubt it simply because the beast can take the Obama constituency for granted.