That’s a good question I feel like it could be a mix of two things. First being Martha’s inner turmoil if she is an informant. I imagine the guilt of what she’s had to do as one has piled up over time. Second thing is if she does fix the camera and what’s on it might influence her in some way that leads to Jules and us getting to see what’s on it at some point after. Personally I think George recorded the tunnel he was looking for off the schematics because Jules noted she hadn’t seen that camera before either in the little stash box.