Harumi and Mistake are DEAD. There is no sugarcoating it! We all know that they are dead, and it is merely the denial that keeps you from letting the pages be! They are dead, and are intended to be dead, there was absolutely NO hinting that either of them have survived.
The only reason they didn't show their deaths on screen is because this is a kids show, you can't do that. They're dead, so stop changing their pages!!