For me, the biggest problem in this drama was the wrong idea in the first episode: "I am her mother and her father". No, screenwriters, that was exactly what the patriarchy wants: all responsibility to raise a child is a woman issue. "Behind the speech of a 'warrior mother', there is an absent father". This drama should have talked about how it's important to divide the responsibilities, such as emotional, financial and long-term support. The drama romanticizes how the mother and grandmother suffer without the father’s support.
In my opinion, it's a irresponsible plot.