Once again the comments remind me that a surprisingly large amount of people here clearly haven't engaged with time loop media before. Like, come on, this was coming sooner or later, and if the girl is still around after an eternity by herself, we can assume that dying most likely won't break the loop. If you think about being in a time loop for one second, you'll see how quickly it will spiral into absurdism - nothing matters, there are no consequences, so you'll start trying all sorts of new experiences out of boredom. And if your friend dies in a coop game with no respawns without a restart, then surely you'll restart, right? This is no different.
My condolensces to youkari though, that is different from just going "wow this is suddenly so dark".