The Possessed Evil Woman Wreaks Havoc

Isabella Dunkeld is a notorious evil woman, hated by her family and scorned by everyone. But things take a strange turn when a powerful demon lord from the demon realm finds herself trapped in her body.
‘How did I end up in this body?’ The demon has no memory of making a contract with Isabella, yet here she is, stuck and powerless. To avoid revealing her true identity, she must act as ‘human’ as possible.
“So, how many people have I killed with these hands? Hundreds? Thousands?”
“Um… you haven’t killed anyone.”
“Not a single person, yet they call me an evil woman?”
Humans are incomprehensible to the demon.
***
To complete the contract and escape Isabella’s body, the demon must fulfill her most fervent wish: ‘Make my family regret everything.’ With an indifferent father and a lunatic brother, the demon decides to get closer to these worthless family members.
“Hey, if you talk like that, you make us sound like tr*sh.”
“You are tr*sh. Reflect on that, tr*sh.”
Is this how it’s done?