There is a term called “Disenfranchised Grief” and it can be used to describe any time a person’s loss is not being validated or substantiated by those closest to them.
To The Distant Shore of Lake Grief
#8… After observing a fisherman launch a second stick of dynamite into the lake, the game warden started his engine and shot across the water to make the arrest. “He yelled on his bullhorn, “Stay where you are. I am a conservation officer, and you are under arrest.”