The Baby Landlord Is Retiring

In my third life, I was reborn as the only daughter of a villainous duke's family, devoid of blood and tears. Seeing people living in dilapidated houses, I used my major from my previous life to build them homes. Somehow, my dad found out about it... "I passed a bill that gives ownership to the person who built the house." Before I knew it, I became the biggest landlord in the country. Since it's come to this, I might as well stash some slush funds and retire! "Thanks to the Lady, we can sleep in warm, new houses!" "Ibriten's youth employment rate has skyrocketed!" "There's a mad rush for the Lady's heated mattress pads. We need to run all the factories!" Oh no, what do I do? Thing...