Before Su Ningxiu's troubles had been fully resolved, Su Yunjin was not yet planning to return to the Gu Family from the Su Family. Without selling her second sister to Old Master Huang, Mrs. Tao would definitely not give up easily.
And her parents were both weak and easy to bully, surely unable to protect her second sister. It was necessary for her to stay in order to ensure her sister's safety. This time, by staying, Su Yunjin intended not only to help her second sister, Su Ningxiu, resolve this issue successfully, but also to use this opportunity to teach her parents to stand up for themselves. They couldn't keep being pushovers, letting Mrs. Tao manipulate and order them around without restraint.
