I always loved this. Heather fears mirrors and feels like the person looking at her isn’t her, but just an imitator. And in that room she’s standing right in front of a giant mirror and has to see how her reflection turns into a dark/bloody version of herself. Getting trapped in a room like that must be horrible for her. And James gets trapped in a prison cell, where he actually belongs for killing Mary. Subconsciously he feels guilty and interestingly he finds The Oppressor tablet in that cell, which represents him.