Answer:
Marcy might be experiencing Dissociative fugue
Explanation:
Dissociative fugue is a mental disorder in which an individual is unable to remember his/her identity or events of the past, as a result, of a tragic or traumatic event. An individual with this type of mental disorder may experience confusion, depression, discomfort, anger, etc.
Dissociative fugue may be triggered by so many tragic events. For instance, a person who have experienced violence in all forms. A tragic car accident may also trigger the disorder or natural disaster among others. Marcy's situation was triggered by a natural disaster (fire), she may be experiencing dissociative fugue as she could not remember her identity.