Dear LIB men, what would you do if your wife sent a stinker to your mum

From a male LIB reader

A few days ago, my new wife sent a stinker text message to my mum asking her to butt out of our marriage. I can't go into details as to what brought about this situation but I wanted to find out from other men how they would react if their wives sent an insulting text message to their mum. I haven't spoken to or eaten her food since my mum forwarded the text to me. I haven't even discussed it with her but she knows I know. I love my mum to death and the thought of someone, especially my wife, sending her a belittling text makes me so mad. What should I do?