@BoshJaker I agree that is what the author probably intended, but as you can see from the comments section, how violence is framed has a huge influence on the way people view it. And here, Minami has multiple bandages on her face, a coworker is actively worried about her, and in the violence itself is depicted rather seriously. Then in the 4th page all of that is ignored in favor of acting like Iori was completely justified and Minami needs to apologize. This makes it feel like the author is saying that domestic violence isn't a serious problem. I highly doubt the author intended that sort of message, but it is still there, and messes up what could have been a good chapter about Minami resolving her own insecurities.
Oh, and as an aside, I don't think "put some sense into her" slaps are a good trope either, since they normalize the concept that hitting someone is an acceptable conversational tactic. But usually that sort of thing is used to create a dramatic visual, ala the one on page 3, and then ignored. They don't draw attention to the violence by showing an aftermath in which the victim is bandaged and coworkers are concerned.