If Hillary had been nominated and won, would she have found a place for Barack in her administration?

I’m not a big fan of speculative questions, but every time I hear a mention on the radio news of “Secretary Clinton” I think what a masterstroke it was for President Obama to put her talents to use in that way. And right on its heels comes the question: what would she have offered him if she had been the Democratic nominee and the winning candidate? and would he have accepted it?

Further curiosity: did she know before the election that he had her in mind for that slot?