I believe that she suspects you are on to her. So her short term plan will be to act out just enough wifey behavior to convince you that an A was all your imagination.
Stay wise and keep your guard up. Women know these little "tricks" to play. She knew very well that you would notice the silver ring. She knows you and she knows pretty much what you would think when you saw her wearing it.....right?
The LBH is usually quick to see a glimpse of something the WAW does that's good and then he "over-kills" with glee.
It is not about what you feel should work in your M. It is about doing the work that gets the right results. Do what works!