Just as Rosa did in the last game, Jocelyn has discovered how to stop being a medium: get your spirit guide to enter the void, then leave him or her there.
Hint 2
But Jocelyn is going to find that freedom isn't what she thought it was going to be. For a clue into what her future holds, notice the similarity between her last name, Contis --
Hint 3
-- and the name of the evil and insane old woman we met in Blackwell Unbound and Blackwell Convergence, who was known as the Countess.
Hint 4
Still confused? We'll learn more about this at the end of the game.