Jayne was in a fast-food restaurant when a man walked in, drew a gun, and started shooting, killing two people before killing himself. Although Jayne was not injured in the shooting spree, she has since been unable to return to work. She can't seem to stop thinking about the event. She has recurrent nightmares, is unable to sleep, and does not want to leave her home. It is most likely that Jayne has:

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Jayne's symptoms are consistent with posttraumatic stress disorder (PTSD), which can occur after exposure to a life-threatening or traumatic event, such as the shooting she witnessed. PTSD can cause intense fear, anxiety, and avoidance behaviors, as well as nightmares and intrusive thoughts about the traumatic event. Generalized anxiety disorder is characterized by excessive and unrealistic worry about everyday events, while cyclothymic disorder is a mood disorder marked by cycles of hypomania and depression. Obsessive-compulsive disorder involves persistent and intrusive thoughts, impulses or images (obsessions) that cause anxiety as well as repetitive behaviors or mental acts (compulsions) that the person feels driven to perform in order to reduce the anxiety.

Jayne Was in a Fast-Food Restaurant When a Man Walked