I am not doubting you are trying to do what is in their best interest and my answer may be something you have done in the past. My recommendation as someone that in the past worked with extremely troubled teenagers, many with true psychosis is to seek an independent evaluation from a mental health professional not associated with any of facilities in the city. Someone affiliated with a facility's first answer will likely be institutionalization for a short time and that may not be in the best interest of your teenager.