Lorna found her husband dead in their bedroom. He had been shot in the chest. After this incident, Lorna has been unable to see. Lorna is most likely exhibiting a symptom of disorder.

The answer is Conversion Disorder

Explanation:

A conversion disorder is a mental health disorder. It's symptoms are physical ones such as blindness, paralysis, seizures, tremors, all related to the nervous system. People are diagnosed with conversion disorder when there is no physical reason for their symptoms for example an injury or illness but rather an emotional event has triggered an onset of symptoms.

Conversion disorder occurs when a person experiences something very traumatic and stressful and the body responds in such a way that it tries to protect the person by disabling parts of the body almost preventing the person from being able to experience any more trauma again, giving the person time to resolve their mental anguish. It is a severe mental reaction resulting in debilitating physical symptoms. The duration of the symptoms varies from person to person depending on other existing conditions and whether appropriate treatment is sought after and applied.

an informal structure in a bureaucracy would be something like so-called "office politics". where there's a formal structure set up for the organization, but then an informal subculture as well that has a way of organizing the bureaucracy further. this can be positive because it sets up an added degree of organization, albeit informal, within the bureaucracy.