Responses
You should be in that situation to really say that. I don't find it low. When a mom loses a child is a trauma. I'm not saying is ok, but you can't really think straight. And they tried hard to have a kid, so they were happy. I don't believe they "ignored" Taehyun on purpose. And the mom and the aunt are the most exposed here, but there is also a dad. I find him odd for not doing nothing at all.
I just read the chapters that dealt with taehyun's past, and honestly what a sh*tty situation. Obviously we don't know how the relationship w/ his parents was, but they probably made him feel excluded once they were going to have a biological kid. I can't imagine how an adopted child would feel if suddenly there's a biological child, but if the parents don't handle it correctly it can end bad, like it did. I also can't understand the feelings of having a miscarriage, but to blame the kid because you were out there looking for him...that's low...