To be a 'Commoner'

Rachel Lynn a mob character inside a romantic classic cliché novels are now living with the antagonist, Noah Campbell also known as the Evil/cold blooded monster Duke. but right now, Rachel at a pinch. It's a do or die situation. nope, not becoming a noble lady that live with the duke inside a HUGEEEE mansion and have to learn about manner at all that 'rich people thingy' and being targeted by assassin. nope. But teaching this 'Evil Duke' to live as commoners. "That's not how you peel the apple!!!" "well, how did you it?" Rachel almost gone crazy teaching this So called Evil duke because he's not evil at all! rather then evil, Rachel would rather call him the Clueless Duke. Well, it fits him perfectly. how Rachel will survive before her last brain cells left her while teaching this Duke?