5 stages of grief by Elizabeth Kubler-Ross. It's very interesting how we cope with grief and loss. It's important to note that the stages can overlap or go out of order, and we can return to stages we've been to before.
Helping Teens with Traumatic Grief: Tips for Caregivers < resource developed by the National Child Traumatic Stress Network: Each teen grieves in unique ways. After a sudden or violent death some teens may develop traumatic grief responses and have difficulty coping. Ways to recognize and help a teen with traumatic grief.
Helping kids put their feelings into words (affect labeling) can help them better navigate strong, negative emotional experiences....
Grounding is a technique that helps keep someone in the present. They help reorient a person to the here-and-now and in reality. Grounding skills can be helpful in managing overwhelming feelings or intense anxiety. They help someone to regain their mental focus from an often intensely emotional state.