I'm sorry this is not something I have had experience with either. However here are links to some articles, from PsychCentral's archives, on the subject of grief & loss:

On Grief, Loss and Coping

Healthy Ways to Navigate Grief

Grief and Loss: Support Groups Resources

| Psych Central

The Truth about Grief and Loss

Feeling Grief Means Being Alive: 7 Tips to Help | Mindfulness and Psychotherapy

https://blogs.psychcentral.com/menta...dium=popular17

https://psychcentral.com/news/2006/1...dium=popular17

https://blogs.psychcentral.com/bondi...o-get-unstuck/

My best wishes to you...