She could guess it herself, and Yun Jianchen was smarter and more perceptive than she was, so he must have figured it out long ago.
If they could guess it, the third uncle and aunt must be able to guess it too.
Basically, everyone in the Song Family could guess it. Looking around the entire Song Family, everyone had a motive for the crime, but Song Xiaoyu was the most suspicious!
She married Yun Zuoyi, got pregnant, miscarried, became infertile, divorced... There was no way she didn't hold a grudge against Yun Zuoyi in her heart. Song Huanyan was willing to bet that Song Xiaoyu definitely resented Yun Zuoyi, but she didn't want to fall out with him. Maybe she wanted to use Yun Zuoyi in the future, or perhaps there was some other underlying reason.
She hated Yun Zuoyi just as much as she hated Song Yuan, who married him... and now Song Yuan was pregnant. Song Xiaoyu would surely think of the child she had lost and the pain of not being able to have children anymore.
