On the other hand, people change a lot in 30+ years; facets of their personality emerge that you hadn't seen before, and you get the rare opportunity to see yourself through somebody else's eyes. It was a good time; her husband is a really cool guy, the kids well behaved, and her friends are pretty cool people too. Lots of good food, good conversation, not too much picking at emotional scars. (Although I have to wonder: is there something in the human brain, some obscure social software thing, that compels divorced people to do memory dumps about their exes to each other? Even though the last thing in the world you want to do with people you haven't seen in 30 years is talk about that stuff...)
So I think we'll be getting together again, maybe for table games or something. LH was one of the people I felt really bad about losing touch with, even though we weren't all that close in high school, and it's good to be seeing her again.