I think her death being super anticlimactic is the point. it shows just how shitty the dad is and how willing he is to manipulate yujin
blaming a child for the mother's death is another level of fucked up (︶︿︶)=凸
And the fact that yujin is still afraid and terrified of him till this age does make sense. A simple mistake that lead to a unexpected event. Of course you would be traumatic After hearing you guys, i am convinced.
I think her death being super anticlimactic is the point. it shows just how shitty the dad is and how willing he is to manipulate yujin