If I may be honest, I believe the ending where we see Mercredi in hell is the best ending. I don't believe she got what she deserved, but what she did was gruesome and horrible. She is the protagonist, and she creates a strong bond in the beginning with the player. But just like the game says, she really is just a wolf in sheep's clothing. She creates an image for the player, making us believe who she is not. Later in the story, she shows her true form, making us utterly horrified, but still hoping she survives and manages to escape even then. The game creates one of the strongest bonds in my opinion, making us fear for her even when she has murdered and consumed another being. Seeing her in hell adds closure. We know that the ones murdered aren't gone for good, and must be feeling better to see their murderer dead. Her friends, and Pierre, must be feeling horrible, but glad to know she died with some form of confidence and content. If Pierre was blamed, Mercredi may very well end up hurting and/or killing others. The rest of the game would be horrible, and may even end up the same way, just Mercredi killing another innocent life. She got what she deserved, but no one, not even I, wants to admit that.