Adrian Croucher gives a dharma talk on grief and Zen, drawing on a range of sources and his own recent experiences after the loss of his father.

References:

Domyo Burk, "Grief in Buddhism", Zen Studies Podcast, May 2020 (two parts):

https://zenstudiespodcast.com/grief-in-buddhism-1/

Lucy Hone, "Resilient Grieving - How to Find Your Way Through Devastating Loss", Allen and Unwin, 2023.