Well, my most recent experience of the Vestals having been "brought up to the surface" in books revolves around a work of fiction. In Lindsey Davis' novel, Saturnalia, the Vestals play a significant role.
I love the way Lindsey Davis ties her fiction in with historical fact. In this scene from Saturnalia, she has the Vestals agreeing to lead a deputation of respectable Roman matrons (properly dressed in black), to go before the emperor Vespasian in order to plea for the life of the historical Germanic priestess and enemy of Rome, Veleda, who has been captured. To establish a reasonable justification for this scene, Davis mentions in passing the historical account of when the Vestals had formed an earlier deputation to plea on behalf of the general Vitellius with Vespasian's general Antonius. (Tacitus 3.81).
Even though such intervention by the Vestals didn't always prove successful, it interests me that Roman generals, and even the Emperor, himself, would pause to respectfully receive the Vestals and give due consideration to their petitions.
-- Nephele