Yeah. It's all for the plot. I KNOW. But she's the root of all the bad things that Grandma and Pilju went through. If she's responsible enough to focus on Pilju and not marrying some old guy, then Grandma wouldn't have to put up with Aegyeom's Grandma. She could have live her life quietly. Pilju wouldn't get entangle with Aegyeom who's obsessed with him. This happened because she's a neglecting and unresponsible mother.
Yeah. It's all for the plot. I KNOW. But she's the root of all the bad things that Grandma and Pilju went through. If she's responsible enough to focus on Pilju and not marrying some old guy, then Grandma wouldn't have to put up with Aegyeom's Grandma. She could have live her life quietly. Pilju wouldn't get entangle with Aegyeom who's obsessed with him. This happened because she's a neglecting and unresponsible mother.