About halfway through my plot, one of my characters is framed for a crime she didn't commit. About a quarter of the book on from that (where I'm editing now) it's revealed that she was framed. I don't want the reader to sympathise with her before this revelation; I want everyone to believe that she was a traitor. But the manner in which she got locked up is important to the plot, for a variety of reasons (foreshadowing, clues, red herrings, etc). This is because she's incarcerated by an underground vigilante group (my MCs) and they don't use regular prison systems. However, no POV character knows what their leader actually did with her. So I'm revealing that, too. At the moment, I've got her sitting in a cell and flashing back to what happened, but I'm not sure (and this is where you guys come in) if there's a better way of doing it? I mean, I can't pick up from where I left her story off, can I? Two weeks have passed since she was framed. Would a flashback stilt the story at this point, or would it be interesting as the reader would (presumably) be wondering what had happened to her?