After she lost the memory of him, Gu Weiwei never asked to see her child again.
Even when Gu Siting mentioned the child and told her that the child was sick, she showed no reaction.
That made Gu Siting totally convinced that the experiment was successful. After all, she was willing to come home because of her child.
If she had not really forgotten about him, she would not have looked so calm when she heard that her son was sick.
Also, she seemed to think that he did not know who she really was.
So she had been concealing her emotions discreetly, pretending as if she had never known him before.
She looked exactly the same as when he had met her several times before.
Gu Weiwei did not ask him to leave, fearing that he would get suspicious if she objected too strongly.
But she just could not sit still, as if thinking of a countermeasure that could allow her to leave.