I've noticed that...Even it sometimes necessary to set up a scene for the other characters...to find out what they are up to, and then progressing the MC story with them, and Sometimes you have to do that even if alot of people may don't like it but they'll find out later how good is this
In this VN case, the scenes with Marvilla husband and with Michael, advance the story, or, ate the very least give some context and flavor to it. It's not exactly a first person story, since the narrator has some access to scenes that the MC has no way of seeing. This is good if it isn't overused, then we have a confusion of Points Of View that instead of enhancing the story, start to detract from it.
There's a nice balance here. Some suggestions to some future story possibilities, I'm getting quite interested in the story.
Peace