Hey Shelly, you were doing great on the explanation until near the end. The PSRB has nothing to do with people who are incompetent to stand trial. If, after 3 years in the hospital the defendant is still not fit to go to trial he or she will either have the case dismissed (which almost never happens except in very minor cases) or, as is the usual case, he or she will have a civil commitment hearing. If the defendant is found to be mentally ill and a danger to self or others he or she will be civilly committed to the hospital indefinately, with a court review of that commitment on a set schedule. At the time of the civil commitment the charges against the defendant are dismissed but can later be refiled if the defendant ever becomes competent to stand trial. If the defendant continies to be a danger and incompetent, he or she will die in the hospital. 

In accordance with the law, Cheryl Kid is on an indefinate civil commitment to the hospital and not under the PSRB.