By the time they began searching for Yu Shaoya, ten years had passed since the end of that movement, and it wasn't so easy to quickly rectify each case. Their family was almost the last on the list for redress, not to mention the many reviews that were still required.
No matter what Yu Shaoya did, the old master and mistress of the Yu Family eventually forgave her! After all, she was the child they had raised by hand, and the elderly couple still held a fondness for her. Who hasn't made mistakes? Many families were fragmented during that era, and Yu Shaoya was not unique. The parents couldn't possibly remain truly angry with their child.