Michelle Obama: "I'd have to think about" supporting Hillary as nominee.

Late Update: A couple of readers have strenuously protested that the question wasn't would Michelle Obama "support Hillary as nominee," but could she she herself "working to support Hillary" as the nominee. In other words, these readers argue, Michelle might vote for Hillary even if she doesn't work for her. I find that to be a distinction with very little difference. Why is Michelle hedging at all?