Actually, it's better for conflicts to be resolved easily in a manga where people actually know how to communicate like human beings instead of leaving it till they can't stand it anymor lmao.
Also...I kinda understand her ambition lolol, I don't know for you but I've seen how girls can be REEAAALLLYYYYY ambitious about this kind of thing, I remember even while I was younger I had some friends who only looked at pictures of wedding dresses...etc etc already thinking of their future children while they were young, but those people mostly had someone they loved, anyway, I've seen just how true her statement is and honestly I hope for the best for them, I've also seen that they were truly loved by the guys they are with and it is beautiful, they even know each other's parents and made a deal with them to both continue their studies and once they gain enough money and have a stable income to finally make a family haha, they are also still together and still working hard for this ambition!
I know it might seem suspicious for some people, even I didn't get it at first but when I saw the marriage of two people honestly loving each other, I understood why it may be a dream/goal/ambition for so many girls and boys alike, so I respect it haha!!