It's possible that dynamic could have shown up about something other than Jane's sexuality, too. For example maybe the parents pushed the kids very hard toward lucrative, secure careers (while not being very wealth-oriented in values) because they didn't want them to suffer poverty the way they had. And when Jane pushed back against that and showed the parents she could be happy while just getting by, the parents realized they had been wrong to push so hard for wealthy careers. And LW went the other way, bought in fully to money=good (and married into a wealthy family that agrees) and feels like the rug has been pulled.