I've been married for 24 years, I've always managed to try and ignore most of my mil's sarcasm, except for when she said things to me about my own lovely mother who sadly died very young from an asthma attack, I had to talk to my dh who then had to speak with his mother. Over the years since she has continued to say things, mostly sarcastic, She has now started saying things to my brother, he was commenting last week about how he hadn't slept well the night before and only had 3 hours sleep, she commented saying "what a pity" in her usual sarcastic tone. I am just not sure I can take it anymore :( :(