Well, your reasoning is so poor. The ML mother is also not so innocent. She evaded the tax. That's not a lawful…
Grannies only took the money after they saw that the man who buried it was dead. They were desperate because they knew the family would need money. They have the laundry, but they are poor. Is it so difficult to understand that? People are so moralistic, even though this is just fiction.
I loved the 30th episode. I cried and laughed so much. It feels like every character is a small part of the family. I'm happy that Mr. Nam helped them bury the money.
I can't believe they will make the chairman date Da Rim's mother. She clearly deserves a better person to be with her, but since they won't introduce any new characters, they will probably end up together. I see many people commenting that they dislike Da Rim's mother and the entire family, and I don't understand why the mother deserves hate. She's a warrior, she takes care of the entire family even after her husband passed away, including his parents. She even takes care of Tae, who isn't biologically related to her. Yes, she stole the money, but who wouldn't? That was her only chance to help her daughter see again.