Jane was so inconsiderate.
When I was a kid, I never really got how selfish Jane was to the Maitlands. She was constantly bothering them to sell their house, showing pictures behind their backs, even when they already said no to selling it, has the gall to tell them it's too big for them, suggesting a family with kids should have it, instead? I, myself, would love to have a huge house like that, even if I never have kids. some people have a preference and Jane was just totally out of line.
I always get the feeling now once they drowned, she was more than eager to sell it rather than mourning them. Especially when she gives Lydia the skeleton key and goes on about how she decorated the house.
I would always rather be happy than dignified.