What boundary? I mean, she's heard them all from you and stating once more is just more of that little boy crying "wolf!"
I would suggest that you go ahead and use that last bullet in your gun: move out and get your own place.
You've done all you can and your wife refuses to step up. She minimizes you, diminishes your fears, and blows them off.
She needs ice-cold water splashed on her face. That ice cold water is you moving out. Then have zero contact with her. Go pitch black dark on her as in a true LRT.
