Caylee is a 5-year-old girl who is referred for evaluation by child protective services. She was recently removed from her biological family and placed in foster care, as her home environment was reportedly unsafe due to conditions of extreme neglect. Her foster mother reports that Caylee is very quiet and withdrawn and always appears sad and disinterested in her surroundings; however, she becomes very irritable when anything unexpected or unplanned occurs. The foster mother became very concerned when it appeared that Caylee was hallucinating. The PMHNP considers that ________.