I'm not sure specifically which 'the grief child' story you are referring to. It could be a relatively unknown or a very specific regional story. There might be many stories with this title or concept that deal with themes like a child experiencing grief due to loss, perhaps the loss of a parent, a friend, or a difficult situation in life.
In most cases, 'Good Grief' isn't a true story. It could incorporate elements that seem realistic, but it's mainly a work of fiction crafted to entertain or convey a particular message.
There could be characters who manage grief through reminiscing about the past with the lost ones. They might find comfort in memories, either positive or bittersweet. It could also be that some characters turn to others for support, like friends or family, and through sharing their feelings, they start to heal.
Writing your grief story can be a very personal and cathartic process. Begin with a specific moment or memory related to your grief. Describe the details - how you felt, what you saw, who was there. You can also include how this grief has changed you over time. Maybe it has made you more empathetic or stronger in some ways. Keep writing until you feel like you've said what you needed to say.
The 'beginning of grief' might involve the first signs of emotional turmoil. It could start with a sense of disbelief. In many short stories, this is shown through the character's actions, like they continue their daily routine as if nothing has happened at first, but then small things start to remind them of the loss and the grief begins to seep in. Maybe the character starts to avoid places or things associated with the lost person or thing.
To write grief well, focus on the little details. Maybe it's the way a character clutches a keepsake or the way their voice cracks when they speak. Build up the emotion gradually, and don't rush it. Let the reader feel the depth of the pain over time.