The idea for the film is good and interesting. It touches on mental health a lot, however, I don't personally feel that this belongs in the 'horror' genre. I guess it depends on what you'd class as gory and what your tolerance for horror is. There are a couple of jump scares if you will but that is only due to jumps in loudness here and there and a sudden movement in one scene. As I said the idea is good but it's a slow build up to an ending that isn't really conclusive so for me it feels like a big let down from a decent start to the film.
Overall the idea is there but the execution was way off, it's not one that I'll come back to, but again it is all personal preferences.