He Shuying was no longer a young, naive girl; she had encountered many people like Liang Shiyu and, even if she hadn't realized it at first, now she faintly felt something was amiss.
She believed that Liang Shiyu was doing it on purpose.
However, since Liang Shiyu and Xie Linchuan didn't live on the old house side, He Shuying didn't know whether Liang Shiyu had experienced morning sickness before.
Seeing Xie Linchuan's attitude towards Liang Shiyu, it seemed that there had been vomiting before; otherwise, seeing Liang Shiyu so distressed, he wouldn't have failed to suggest going to the hospital.
It must have been clear to him that Liang Shiyu's condition was a normal pregnancy response, and that going to the hospital would be useless, which is why he hadn't mentioned it.
But at this moment, He Shuying was suspicious, although she had no evidence to claim that Liang Shiyu was doing it on purpose.
As for why pretend to have morning sickness?
He Shuying thought of many reasons.