First of all, great guide! It is easy to follow and it is written in a very nice way
I found a small error (I might even be nitpicking a bit). In Episode 1 you write:
Select the mask and show it to the woman on the right (Miss Kohne), she will freak out and be taken to the Isolation Room.
However, Miss Kohne is positoned on the left side of the room.
Edit: In Chapter 2, the part where you first enter the Town Center, you write this:
Start walking to the left and you will come up to some trees by a window, in the window there a is a woman - talk to her.
For some reason every time i approached the window, she closed it and I was unable to talk to her. I went searching elsewhere in walkthroughs until I stumbled on this one where this part is described a bit in more detail:
link hiddenTalk to the woman behind the window - stay close to the wall when approaching the window, and when right next to it (but not in front of it), talk to the woman. Go through the dialogue options. You will receive a flower and the graveyard will now be unlocked.
Perhaps you also want to add that you have to remain close to the wall as otherwise you are unable to talk to the lady