With all due respect, kolle, I would submit to you that maybe she doesn't.
Ask yourself this, and try to be honest with yourself:
Assuming that people judge us more by our ACTIONS than by our WORDS (and I think most people would agree with this), DOES your wife really know where your boundaries are???
Let me put it another way. What, specifically, have you DONE (not "said", but "done") with regards to her adulterous and disrespectful behavior, much of it done right in front of you, that would lead her to believe that there are serious consequences to her destructive behavior?