The Villainous Family is Against Independence

I became an illegitimate child of a bloody villainous family with no family love. Elodie, who had a weak body and a nervous attitude, bullied the servants.
´Three years from now, my sister will be adopted. ´
The female lead, who was adopted as a political tool, will melt not only her father but also the whole family with her loveliness.
Let’s earn some money and become independent from this family before the sister shows up!
…I did.
Duke: “Independent? What kind of bullsh*t is that?”
1st Brother: “Who is the guy that said that.”
2nd Brother: “Sister, you’re not planning on running away from home, are you?”
Duchess: *sips tea and sighs*
My family is against my independence?