How do you handle a wife harassing the mistress?

Its rather enjoying to see a wife harrass a woman who is cheating with her husband. Most of the time its the other way around. I guess the mistress is crying to you about it am I right,she's getting what she deserves and your wife should kick your butt to the curb so you can move in with the mistress. You and your mistress deserve each other, maybe your wife will find a man who really cares about her.

Or we could turn it around, the mistress is the one harassing the wife..