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. Â
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.