I Killed My Ex-Husband, and Now I Have a Pocket Dimension to Stockpile Food and Escape the Disasters!

[Audio edition out now: Upgradable Pocket Dimension + Flight from Famine + No Saintly Protagonist + Natural Disasters + Human Calamities + ...] (The rating has only just come in. It'll go up later, haha.) Note: The protagonist doesn't know she'll have to flee from famine in the early chapters. In the apocalypse, Xin Yue died alongside her sworn enemy while searching for clean water. When she opened her eyes again, she had become a concubine who'd slept with another man. Her ex-husband despised her as a country girl and tried every way he could to kill her. Feeling she owed Xin Yue an apology, the old madam gave her a divorce document and sent her back to her hometown. Luckily, both her bonded pocket dimension and her lightning ability had come with her. Before leaving, she killed her vicious ex-husband. She returned to her hometown, thinking she could live happily with her family. Little did she know that in the years she'd been gone, many things had happened back home. Some had died, some had gone mad, and others had been kidnapped and sold... Luckily, there were no awful relatives, and after she returned, things started getting better for everyone. Make money, make money, make money! Unfortunately, the good times didn't last. A natural disaster suddenly struck. With the people plunged into misery, they had no choice but to flee. While others gnawed on tree bark and ate mud, Xin Yue wasn't afraid. Her pocket dimension was stocked with food. Then a neighboring country they'd always been on good terms with suddenly turned against them... (A little note: The protagonist can't control the heavens, the earth, or even the air. If you like stories where the heroine is the absolute ruler and thinks she's the best in the world, this one isn't for you.)