Everyone is sympathising with Chimi, but no one is sympathising with Eri? I don't think she has a choice either.
I'm sure everyone would sympathize with her situation, her parents would never approve of her choice of partner. This thing is quite common, but it's just that over here a lot of us will stand ground versus our parents and just wait till things naturally turn for the better.
Still, the way she blushed while she and her fiancé were "flirting" let's us know that she at least enjoys being around him to some extent. So although their relationship is over between the two girls, there's a strong possibility that she isn't in some relationship that she will feel miserable in, at least that's what I hope.
For that I am glad, if this was a Yuri from the 70s, 80s, and 90s the guy would be the most vile of men and would rape his "fiancé and / or wife" and call her all sort of filthy names. Yuri back in the days used to vilify men with such drama and passion.