A child may not be detained at, or committed or transferred to, a correctional facility, as defined in § 1-101 of the Correctional Services Article, except in accordance with § 3-8A-16 of this subtitle. A child who is not delinquent may not be committed or transferred to a facility used for the confinement of delinquent children. Unless an individualized treatment plan developed under § 10-706 of the Health - General Article indicates otherwise: A child may not be committed or transferred to any public or private facility or institution unless the child is placed in accommodations that are separate from other persons 18 years of age or older who are confined to that facility or institution; and The child may not be treated in any group with persons who are 18 years of age or older.