Wife Versus Side Piece Brouhaha..

What would you do if you ran into your husband's girlfriend? There was a viral video some days back of a wife who met her husband's side piece at all mall and embarrassed the living daylights out of her...Side chic was clam and did not fight back or say a word,and even when her wig was pulled off,she remained calm...... What would you have done as wife or side piece in a situation like via IFTTT