Looks like she wanted it after all.
I think the reasons highlighted on September 10th (mostly through Noam Scheiber's excellent work) came to pass, but there's no absolute proof of this. Just a hunch.
Now understand, she's being named Interim Head of the Consumer Protection Bureau. This is key.
Because the Senate can't get its act together, and pass the large number of other appointments waiting on their desk because of Republican obstructionism, the President has taken on a new tactic.
He appoints Elizabeth Warren to the position on an Interim basis. If the Senate continues to act like...you know...the Senate...and resists her nomination, we get both the benefit of a fight where Republicans are tarnished as people against protecting consumers, and she gets to do her job in the meantime.
Time to start throwing knuckleballs high and inside. If someone gets hit, tough @#$!!
(Yeah, that was a Baseball reference. It means that...never mind.)
Anyway, I'm glad she got the job. I'm glad she wanted the job. I think this is a good thing for America.