Hey, I saw that you participate in the Psyche Game Jam - that is wonderful. I do see some mental health ideas in the story and characters.
That is an admirable goal that you have.
However I cannot help but think that SPOILER the gruesome horror that presses the protagonist and is the cause of her sleep paralysis is disturbing. Usually with therapy it's supposed to be a safe environment. So maybe the idea of a horror game is incompatible with a therapeutic experience. You're sort of adding disturbance. Yes, you remove it later but it is nevertheless more stress, not less. Does that make sense?