Napolitano is a seasoned politician.
She can handle these so-called grillings.
What is interesting to me is what dynamics are playing out behind the scenes. If the democratic party as a whole is able to give Napolitano a brighter brighter future if she tows the line - then she'll tow the line. But if it becomes apparant to her that her future is better served by breaking with the Obama administration - she'll do it.
She's not just a political cronie, she's an ambitious politician who just happens to be doing an admistrative job at the moment.
I think a lot of it probably has to do with how complicit she was in F&F to begin with. It will be interesting to see how it plays out.