Nirvana of the Apocalypse

Five years into the apocalypse, humanity has vanished. Lin Luan survived the zombies, but perished at the hands of her companions' greed. Opening her eyes again, she found herself six years in the past. The apocalypse hadn't yet arrived, and her loved ones, who truly loved her, hadn't perished because of her... She'd made amends for her past life's mistakes in this one. Reborn from the ashes, she vowed to be the butcher rather than the prey. She would do everything in her power to ensure a good life for herself and those she cared about! But then, out of nowhere, a senior brother appeared, begging for shelter, shelter, and support. How should she respond?