The following text is for questions 1 to 4.

    Once upon a time, there was a little girl who lived with her mom in a small thatched hut in a deserted hamlet. Her father had passed away when she was still young. Therefore, they had to work very hard to fulfill their needs.
    One day, the mother fell ill and asked the little girl to meet a doctor. The little girl quickly left home with worries filling up her heart. Suddenly, she met a snowy-haired old man who was a doctor. Then, they went to the little girl's house. The doctor examined the mother and said that she was seriously ill. He asked her to get to the banyan tree by the woods and found a daisy.
    It was bitterly cold outside, while the girl was only wearing a thin layer of clothes. She kept on walking and it was not until her feet felt worn that she reached the banyan tree. In front of her was a bush with a beautiful daisy. She picked it up and cherished it in her hands.
    All of a sudden, the old man’s voice echoed in her ears, "Each petal represents a day your mother continues to live." She looked down on the flower and counted, "One, Two, Three… Twenty! Oh no! There are only twenty days left for my mother!"
    Thinking for a while, she gently tore the petals into many small pieces. Each piece turned into a thin glossy petal. The twenty-petal daisy turned into a countless-petal flower. She rushed home with the strange flower. The old man was waiting for her at the door. He told her cheerfully, "Your mother has recovered. It is the reward for your pious heart."
    Ever since then, every year during the autumn, the flowers with many thin glossy petals blossom created a picturesque scenery. They are called the Chrysanthemum, the symbol of piety.

Adopted from: https://www.bedtimeshortstories.com/the-legend-of-the-chrysanthemum (April 6, 2020)

What cured the little girl's mother?