An interesting detail

I'm can't remember if it was mentioned in the manhwa since it's been a long time since I read it, but a few days ago I've read the novel and an interesting detail came to me. We all remember Hyunie's sister who lives her brother the most. Apperantly Hyunie looks a lot like his mother and when she died she made a convenant with her husband to make sure their children are happy. She was such a sweet woman. ╥﹏╥ Anyway, the thing is that Hyunie's sister is a child from her father's first marriage. He got married purely for convenience and didn't love his wife at all, he also rarely came home. Unfortunately his absence allowed his daughter to be abused by her mother (it wasn't directly said she was abused, but he described it in a way that obviously pointed to abuse). As soon as he found out his daughter was abused, he divorced that woman. He felt extremely guilty of not knowing that his daughter was going through such pain and obviously it was hard for them to get close after he neglected her. But then Hyunie's mother appeared, she was such a lovely person that both father and daughter united in their affection for her. She treated her husband's child as her own and loved her the same. Then Hyunie was born and he was the spitting image of his mother, which only made them love him more and making him happy was their motivation to get over his mother's death.
I wanted to share it, because I think it's such a good part of this story. It was so good that Hyunie and his mother were the light of their bruised life and in the end led to them having good parent-chil relationship.