Triggering Marie's max S Link events after december

[Aidan63]

Hello, Is there a way to trigger Marie's events for the dungeon and extended epilogue after the December cut off point? I didn't realize you had to max out Marie's social link and due to some issues with vita save manager the only decrypted save I have is when the game jumps ahead to the 23rd. (All my other saves are still encrypted so I can't edit or even reload them now)

I've tried editing the save to set Marie's S link to 10 as well as changing Marie's S link to 9 and setting the current day to some time mid December to get the final s link rank but the game will skip ahead to the 23rd on the next day and doesn't remember the S link increase from 9 to 10.
In both of these cases when I talk to Margaret on the 2nd she never mentions searching for Marie so the extra events will never happen.

Is there some combination of options in the save editor which will trigger the event or even a way through manually editing the save? Cheers.

EDIT: Seems I got the extended prologue and true ending mixed up, I got the true ending which is the main thing and just watched the extended prologue. Could still be useful information if anyone else has this trouble.