And Xiaoyu was initially bought from a trafficker, and a contract of enslavement was signed: alive she belonged to the textile factory, and dead she would be the textile factory's ghost. Even if they killed Xiaoyu, at most they would only be fined some silver coins. It would not be a life for a life.
Furthermore, Xiaoyu was a fleeing slave of the textile factory. If the factory demanded accountability and caught Xiaoyu again, she could only redeem Xiaoyu at a greater cost. She could use her status to press the government, but it would be quite troublesome and might easily offend people. Thus, she could not punish that despicable man through the government in a fair and square manner.
In the Space, Xue tuanzi, watching its master with her ever-changing expressions, timidly asked, "Yanyan, do you want to kill that despicable man?"