The story behind "Grateful Heart" that I know is different from what you said, but you can refer to it.
There was a little girl who was born aphasic. Her father died when she was very young. She and her mother depend on each other. My mother goes out to work very early every day and comes back very late. Every sunset, the little girl starts to stand at the door of her house, looking expectantly at the road in front of the door, waiting for her mother to come home. When her mother comes back, it is the happiest moment of her day, because her mother brings her a piece of rice cake home every day. In their poor family, a small piece of rice cake is a supreme delicacy.
One day, it was raining heavily and it was already past dinner time, but my mother hadn’t come back yet. The little girl stood at the door of her house and looked and looked, but she couldn't wait for her mother. The sky was getting darker and darker, and the rain was getting heavier and heavier. The little girl decided to follow the way her mother came back every day to find her mother. She walked and walked, and finally saw her mother lying on the ground on the roadside. She shook her mother's body vigorously, but her mother did not answer her. She thought her mother was too tired and fell asleep. He put his mother's head on his lap, hoping to make her sleep more comfortable. But then she discovered that her mother's eyes were not closed! The little girl suddenly understood: Mom may be dead! She felt scared, took her mother's hand and shook it hard, but found that her mother was still holding a piece of rice cake tightly in her hand... She cried desperately, but couldn't make a sound...
Yu The little girl kept crying for an unknown amount of time. She knew her mother would never wake up again, and now she was alone. Why don't mom's eyes close? Is it because she doesn't trust her? She suddenly understood what she should do.
So she wiped away her tears and decided to use her own language to tell her mother that she would live well and let her go with peace of mind...
The little girl sang the song "Thanksgiving" in sign language over and over again in the rain. "Heart", tears and rain mixed together, sliding down her small but strong face... "Grateful heart, thank you for being with me throughout my life, giving me the courage to be myself... Grateful heart , thank fate, I will cherish the flowers as they bloom and fall..." She just stood in the rain and kept doing it until her mother's eyes finally closed...