Turns Out I'm This Awesome

In her previous life, Xian Yu had no grand ambitions. As the Southern Border's Divine Maiden and the Qingxin Sect's senior disciple, all she wanted was to grow old with the junior fellow disciple she loved, who loved her in return. She got her wish. They married and had an adorable son and daughter. In the fourth year of their marriage, the Qingxin Sect was wiped out overnight. The killer was the very man who shared her bed. It turned out her junior fellow disciple was descended from a Blood Demon, and had a blood feud with the Qingxin Sect for killing his parents. He had endured humiliation and married her solely to take revenge. As Xian Yu stood amid a mountain of corpses, weeping, he told her, "I'll spare you." Calmly, Xian Yu entrusted her young children to someone reliable, then single-handedly stormed the demon's lair, fighting to the death. After Xian Yu died, she transmigrated to another world. She cultivated for many years, and finally got the chance to return to her own world. She transmigrated into a body a hundred years after her death, determined to settle every score and repay every grievance. She would make them pay in blood! But then she discovered... - Most of her enemies had been dead for years. - After destroying the Qingxin Sect, the scumbag hadn't gone on to slaughter the rest of the righteous sects. Instead, he'd been forced to retreat to a tiny, run-down corner of the world. - The Qingxin Sect's senior disciple, the former Southern Border Divine Maiden Xian Yu, was remembered by later generations as an incredibly powerful hero who subdued demon dragons and vanquished ghost kings. W-was she really that amazing? She remembered being a total couch potato in her previous life! Later, Xian Yu finally figured out what had happened. Her timid, darkness-fearing, bug-hating little boy was now the Southern Border's Commander-in-Chief for the Demon Suppression Forces. Her adorable little girl, who used to wear pigtails and love candy, was now the Southern Border's empress and the Lord of Qingcheng. She never imagined that in this life, she'd win without lifting a finger. Theme: Love and Peace.