Provide an analysis of the case below, including the client’s main symptoms, diagnosis, possible causes of the disorder, and treatment options

Provide an analysis of the case below, including the client’s main symptoms, diagnosis, possible causes of the disorder, and treatment options. Use the course text and/or a scholarly peer-reviewed journal article to support your diagnosis and explanations of causes. Respond to at least two of your classmates’ posts, explaining your agreement or disagreement and rationale regarding their analysis, no later than Day 7.
Mary is a 33 year-old, female, Latina, married, elementary school teacher. She was walking her dog after work one evening, approximately two weeks ago, when she witnessed a man on a bike get hit by a car that blew through a stop sign and left the scene. Mary and two other bystanders ran to help the man. There was a lot of blood, and the man appeared to have sustained serious injuries. Mary reported feeling “numb” and calling 911 at the urging of the other bystanders, while they attempted to talk with the man and reassure him until the paramedics arrived. Since the incident, Mary, typically very outgoing and empathic, has reported feeling detached from her students and her partner and also having trouble sleeping. She stated that she has nightmares every night that include vivid images of the incident.