Answer:
The best answer choice, from the long list of possible disorders that Mary may be experiencing, given the list of symptoms and the information on the question, would be: PTSD, or Post-Traumatic Stress Disorder.
Explanation:
When a person seeks to cause self-harm, and you wish to know what disorder may lead this person to do that, there are several options to choose from: borderline personality disorder, anxiety disorders, depression, eating disorders, and another form of anxiety disoderds, PTSD. Given the information on this question about Mary, aside from her taking antidepressants, and engaging in therapy, she is dealing with tendencies of sel-harm, but she is also having to learn coping mechanisms, develop her self-respect and most importantly, deal with past traumatic experiences. These facts lead towards PTSD more strongly than any other disorder. Most likely, Mary had to deal with abuse, or seeing someone in that situation, and since PTSD can express itself a while after the event took place, it seems like the best fit here.
