Why do grandparents not like granddaughters?

I don't want to get too close to Du Xianxiu and Che Zhiyuan.

Kong Meici showed no love for her granddaughter Bai because she didn't want to get too close to Du Xianxiu and Che Zhiyuan, but her love for her children was not completely hidden.

In the TV series Flowers of Evil, although only the dean Bai is a complete family, this family is actually fragmented, and everyone's heart is riddled with holes. If we really want to compare, only the president's wife Kong Meici can be called a person with normal human feelings.