Abby hears from a reader whose nephew is hostile toward mom and her BF, while a man wants out of marriage to spendthrift, cheating wife, but she attacks him.
Abby hears from a man whose wife of many years leaves their daughter stranded as she has an affair, while a DIL is vexed to be left out of family text thread because she's not blood-related.
She isn't necessarily the only one feeling the pressure, but the bride is generally more focused on the details like food, flowers, guests, and everything else. And so the common trope of the 'Bridezilla' was born.