Ah... Makino... you don't understand how obsessed Asian moms are with continuing the family line...
(armchair psychologist voice) I have reason to believe Asian mothers force the burden of childbearing on their daughters because they themselves had to suffer that pressure, and sunk cost fallacy about bloodline carries intergenerationally.
That's exactly what it is. "I had to go through it so you should do it too" + "What will others think if my daughter doesn't have children?"
Yeah, a lot of people think that not having children just deprives your life of meaning, especially if you're a woman. And then there's the "you should have to go through the hardship that I went through" mentality, which is utterly insane.
I think this mentality makes a little bit more sense when considered from the perspective of a family/lineage thinking than from an individualist viewpoint. If Makino's mother views herself less as an individual with own needs and interests, and more of a representative of her lineage (which is indirectly supported by her obsession with the family business), her anger at Makino's refusal comes less having had to eat the same crap in her youth, and more from the fact that in her mind, Makino is not an individual, but just another representative of her lineage, and thus subject to the same societal duties. In that case, Makino's mother may not even be capable of adopting an individualistic perspective anymore, since that would entail coming to grips that she has wasted her life on things that were expected of her societal role but that have never made her happy.
I realize now that what I said above sounds a bit like I am excusing Toxic Mom's actions -- I am not, for the record.