51-50 holds

In my teenage years, 16f, I was a runaway twice. The second time when I returned my parent took me to the local sheriff's office as a runaway and had me held there in the local jail (1 week-10days) until a bed opened up at the local hospital psych ward. I was in the ward for about a week as well. In the beginning of my ward stay I grey rocked the Dr. by not responding to any questions, talking etc. just staring at the floor or out the window. I eventually responded and worked out my shit and got released. No further issues needing inpatient treatment. My discussion questions is if I had to continue to grey rock, would I have just been left in there or would they have to release me? Now as an adult the same questions, if I dont participate in the treatment am I just left there? How does that work?