A 16-year-old girl of South Asian descent presents to the PMHNP accompanied by her father. He reports that since the death of her mother 3 months ago, his daughter has been having episodes of strange behavior. He describes these episodes as beginning with a stomach ache and dizziness. Then she behaves as though her dead mother has taken control of her body. After a few minutes, she is back to herself again. Afterward, the patient states she cannot remember anything about these episodes. Which culture-bound syndrome should the PMHNP include in the differential diagnosis?