Gui Mushuang
This thought suddenly occurred to me— It was mentioned that yu shiwei was pregnant and had bulging tummy but it was also said that she had the same figure and was only fat around her belly. Women who are pregnant gain fat. Although they have protruding belly but they have fat on different parts of body. So I'm just saying that maybe... Just maybe she put on fake belly and come in front of FL to see her in despair. Or it can be as the FL thought that Su Liangchen cheated on her
I actually doubt whether the Yu family was really her family. No matter what, there's no reason to abandon their child. It's not like they can't feed an extra mouth. And even if you don't like her for being under educated there's no reason to frame her and kill her, right? She was a mere girl without any power. There's probably something else that made her a stumbling block for them....