Mind-Reading: Seven Joys Bring Prosperity to the Farm

Her seemingly useless father is actually the legitimate son of a marquis's household. Switched at birth, he grew up as a poor farmer in a remote mountain village.

[Dad, you have no idea how to handle household power struggles. If you return to the marquis's estate, they'll make you take the blame before you can enjoy any of the riches. Woe is you.]

Dad: Being the marquis's legitimate son is great! We'll never go hungry again!

[Mom, you're even worse. Dad at least got to enjoy a few nights of wine and women, but all you got was a bowl of poisoned wine. Alas.]

Mom: You dared to go drinking with women behind my back? I'll kill you!

As for the other six siblings, they're hopeless romantics, naive sweethearts, henpecked husbands, and earnest simpletons...

They have a little bit of sense, but not much.

Siblings: ...Little sis, you're barely a foot tall. Has your brain even finished growing?

After looking at them all, it seems the whole family can only rely on her.

Household power struggles? What's there to worry about?

Easy as pie!

Unfortunately, before she even gets involved, every member of her family becomes a star and rises to success.

A free ride???