Read other letters about this article
To begin with, I agree with the writer of "What's the fuss, again?" What IS the fuss? Relatives are a pain. Big surprise. It's even worse when it's your "spouse's" relatives and you don't know all the family shorthand. Believe me, he's just as uncomfortable with your family -- even if he doesn't tell you. You'll need to learn to get past that and a lot more if you're going to be successfully married, much less successfully raise a kid or two or ten.
But the real point here is Cary. I love how he sometimes sees so far behind the scenes in his response. He sometimes misses the mark, but when he's right it's a pretty powerful read. Today falls on the powerful side, and he rightly puts the blame for the "loss of control" on the LW because she never did anything to give herself control of the situation. Not many other advice columnists would, I think, divine that based on this otherwise persuasively written letter.
Genius, man.