I have three adult kids, he has three.  We have been married for almost 25 years.  In that time his oldest (just 10 years younger than me) has never liked me.  It has all come to a head with a two-page email where she calls me a bitch and tells me all the reasons I have ruined her life for the past 24 years.  Note, she was married to a pedofile that molested their oldest daughter and she didn't want to divorce him.  Of course, I was very vocal about that.  She rented a home from my hubby and brought dogs in when dad said no, and on and on.