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Crazy Mother-in-Law Stories: The Craziest Mothers-in-Law of All

Author

Emily Schmidt

Updated on March 29, 2026

I've heard loads of crazy mother-in-law stories in my day. And {Shhhhh! } I may have told a few too. (My MIL told me several times, while I was planning our wedding, that she was a skinnier bride. WTF?) But ladies, nothing compares to this roundup of batsh*t-crazy mothers-in-law—all letters to the Dear Prudence column—which Slate compiled for "Mothers-in-Brawl," an article that explores mother-in-law relationships with truly shocking examples of bad mother-in-law behavior. Be prepared to cringe. (You'll have to scroll down at a few links to get to the right letter, but the goods are all there.) + The future mother-in-law who insists a on chocolate wedding cake—even though the bride has a severe chocolate allergy. + The future mother-in-law who doesn't want the bride's father to attend the wedding because he has scarring from severe burns. + The future mother-in-law who told the bride who her fiance's biological father was—when she told her own son that she didn't know. + The mother-in-law who drops in to make sure her son has enough food and clean laundry. She also makes all of his appointments—and goes to those appointments with him. + The aesthetician future mother-in-law who wants to