The image of Zheng Haoyu flashed through Su Nian's mind, but she didn't believe that he would harm Qin Xiaofei. Firstly, he had never acted against her before, and now that she was in a mental hospital, there was even less reason for him to do so.
Speaking hypothetically, even if no one targeted her, in her current situation, she would either spend her entire life in prison or in a mental hospital. There was simply no good outcome for her, so there was no need to harm her.
Secondly, Qin Xiaofei had accompanied him for so many years; he wouldn't be so heartless as to sever ties, would he?
Excluding Zheng Haoyu, who else could it be? Who loathed her enough to drive her to madness and disrupt her peace for the rest of her life?
Apart from Zheng Haoyu, Su Nian couldn't think of anyone else. But if it were Zheng Haoyu, she couldn't find any motive either.