Unreasonable stepmothers

#1

Why is Ling Guensheng’s mother so unreasonable? How can she introduce An Sheng to a man when An Sheng has clearly made it known to them that she’s about to get married to Kang Muzhi? I just don’t understand why some people are so selfish, wicked and unreasonable.

#2

Even Guensheng is not worthy of her, a brother liking his own step sister who shares half blood with him? It’s too unreasonable.