The Eldest Sister Reborn as a Love Rival

The general's legitimate daughter died, but was reborn in the body of her love rival's good-for-nothing sister. The former love rival turned into a good sister who was more affectionate than Jin Jian in a blink of an eye. Xie Siyuan said that she was under a lot of pressure, but more than one person had changed. The ambitious regent who controlled the government was not her murderer?