Quote: How do you approach her about this? When? I've spoken to her about admitted faking during our year apart on our 'conjugal visits', but spoke on the assumption that that wasn't a problem before.
IMHO I would NOT bring it up. That's past. Start with where you are now. To resurrect that issue to me would be like going in the back yard and diggin up a body that's been there for a year. You said it in your post: it hasn't been a problem. So don't make it one.
You might at the right moment, say something like this ONCE and then drop it: "I love it when we come together, but I also love it a lot when you come without me, because then I can focus on all your sensations and really see and hear you. You are so beautiful at that moment"-- or something like that. But don't make a major issue out of it.
