MY MOTHER-IN-LAW INSISTED ON PAYING FOR DINNER. THEN I GOT A FRAUD ALERT. My phone buzzed in my purse as we were leaving the restaurant. A fraud alert. $450 at the exact place we just ate. I almost dismissed it, thinking it was a glitch. My mother-in-law, Carol, always pays. It's her thing. She uses it to remind my husband and me that we're not as "established" as she is. She makes a big, theatrical show of slapping down her platinum card every single time. Tonight was no different. For our anni