AB is a 17-year-old, English athlete and college student, in the midst of transition into professional tennis. She is academically highachieving and got straight As in school examinations around three months ago. Following her results she immediately left to compete in an international pro circuit tennis event. While abroad and dining in a restaurant, she and her coach directly witnessed a mass shooting.   Two people were killed and others were wounded at the scene. One died from their injuries later. A knew nothing about the reasons for the attack, nor did she know the deceased. She had tended to a neck wound in one injured person, while a crowd of people waited for emergency services to arrive on scene.  This victim passed away despite prolonged attempts to resuscitate him.