One aspect is the availability of individual therapy. I have argued earlier there are six significant potential needs individuals may have following shocking events. Cultural rituals, such as funerals and wakes, often meet these needs. Venting and emotional processing. We are emotionally based animals.
Individuals can become quite distressed by strong reactions following a shocking event.
Education and direction. An important aspect of self-care is knowledge of how to care for oneself. Persistent or delayed onset symptoms should be an indication of the need for professional follow-up. Knowledge of this will more likely result in proactive self-care. Some events are shocking.