Some mindreading in there, but I think you've mostly got it. Put much more simply, "People tend to value that which is difficult to achieve," as I say often here. Plus she needs to see and feel that "Sho is NOT okay with this." (soooooooo many people on these boards SAY THOSE WORDS -- "I will not live in an open marriage" -- but their ACTIONS shout otherwise!)
I'd be careful about the "financial commitment" part however. Do NOT do anything to make her overly comfortable in her current arrangement, or that enables her affair in any way. If she indicates she plans to basically fire you as her husband (by either making a legal move, or really just continuing in her affair even after she knows you know about it) . . . then you no longer have an obligation to protect her financially. She works and earns her own income, and she's going to need to start putting on her BGPs if this is the path she insists on continuing down.
