I'm sure that feeling safe with you does give her that confidence. That said, I'm sure you know, it would be a naughty rush for her, to be a bit out of control. Outside of her safety zone. Smiling and flirting with a man without the protection of her husband. A man who she knows has every intention of seducing her out of her top. Of enjoying her bare breasts. Having her be oh so bad.
Even as you sit at home, knowing the sounds of the moans that must be filling my hotel room. The images that must be filling my eyes. As your wife savors being my fuck toy for the night.
Does she have any idea of how open you are to that possibility? Or do you think you need to share a picture with her like this (forgive my editing of your original post) to highlight those possibilities.