to be fair, the enter game is basically a flashback .
But, no because How MC remember her is not the key factor of Interlude . What was the point is that the player have a feel for the character, instead of the " she is my best friend " deal with it.
The player get to know her , and in some extent even shape her to what kind of person she is.
I mean I do at least understand the intention, what he was aiming for.
I do agree that she should have never even return in the first place.
but I admit that by dong the way he did, it, instead of just a simple flashback, is better in a way, because I would even give less fuck about her than I do now.