Shocking! The female protagonist unlocked her powers by killing people!

Subject 01, who dedicated everything to humanity, was betrayed and, just as she was about to drag everyone down with her, was approached by a system claiming to be 'Destiny,' and transmigrated into its body. Ling Yi, originally the daughter of the Prime Minister, was maliciously switched at birth. She was eventually found, but her parents didn't love her, and her siblings disliked her. They only brought her back to marry a crippled prince in place of the fake heiress. Once again rejected by her family, Ling Yi drowned. When she awoke, 01 had become Ling Yi. Unloved by her parents? She didn't care. Disliked by her siblings? She didn't care. The past was irrelevant to her, but if she repeated it, she would be killed. ...