Why Does a Wealthy and Charitable Family Do This?

A Female Lead of Noble Birth, Proud and Elegant, With Her Daily Life as the Focus

The male lead can be there or not, and either modern or historical settings are fine. No fake-sweet female leads, no throwing themselves at the male lead, and no crude catfights. I want a very well-mannered heroine, the kind who can curse someone without using a single swear word.