Pairing: Sierra/Victor (Priya/Tony, really, but there's not a tag for that)
Fic Title: Guns and Pretty Girls and Other Things That Steal Your Soul
Author's summary: The feel of her is as familiar as the weight of a gun in his hands.
Given how little we really know about Priya and Tony as people independent of the Dollhouse, this fic feels so rightly in-character it's amazing. The author weaves in the language of art (hers) and war (his) in the process of telling their story (from Tony's POV), from breakup (as implied in Epitaph One) to after they escape the "thoughtpocalypic" Los Angeles. It's more or less consistent with canon.
I've come back and re-read this fic a few times. There's one line in particular that sticks with me every time:
“I wish I could paint them,” Priya says, and his idea of happiness becomes a world in which Priya can paint again.