Transported to a Famine Year, I Stockpile Grain and Make My Fortune

Song Mi died in the apocalypse and transmigrated into the body of a baby. When she saw the bare walls of her home and her mother being bullied by her mother-in-law and sisters-in-law, she immediately stepped in and put them all in their place. But then her father, who should have been dead, suddenly returned with a princess in tow, intending to demote her mother from wife to concubine. She took her mother and left him. With a personal space in hand, she could turn the world upside down, and she led her mother and two older brothers to build a fortune. But why was her scumbag father suddenly pleading so pitifully to come back...?