As someone abandoned by a parent, I see Hyesungs reactions as 100% valid. While my "parent" was not a victim of abuse (more the abuser), they also acted the same way. Disappeared. Zero effort to maintain or grow a substantial relationship and claimed I didn't put enough effort in.
Frankly, in a child-parent relationship, we (the children) still have expectations of parental leadership.
With my parents who raised me, our relationship is effortless. We have foundation of love and trust. I do put in an "effort" but it isn't the same.
Being abandoned hurts. Whether your parent was good or not. Even if you are a million times better off without them.
"Why wasnt I worth the effort? Why wasn't i worth the time and love?"
Hyesungs mom has put herself as her sole priority. I agree but even further the narrative this Hyesungs mom is deflecting some of her guilt onto him.
It is not the child's responsibility to seek out their parents. No matter who old the kid is.
Its not as if she was dead but it's that she CHOSE to disconnect even though she was at a better place at the later part of the story. She only "reconnected" when she saw that news article in the original story, if it weren't for that she even wouldn't bother looking for him. Plus she kinda blamed him saying "you also didn't look for me even though you had the chance". Blaming the kid you abandoned is such a bad move imo