The alphabetic quotation of words Princess is doing is called a grounding technique. It is thought by cognitive behavior psychotherapist as a technique to contain anxiety symptoms in stressful situations. Princess is obviously suffering from post traumatic stress disorder caused by traumatic events from her childhood.
Shortest episode of the series.
Due to COVID-19, Eleanor Matsuura was unable to travel to film her role in this episode. A stunt double was used for the physical scenes Yumiko is in, and Matsuura recorded audio remotely.