根据所给图画,用英语写一篇约80词的短文.要求完整叙述故事内容

One day, Lily asked her grandmother for 2 yuan. When her grandmother gave the money to her, Lily ran away quikly without a word. Her grandmother was angry, she guessed Lily may buy some drink or sweet and she want to know how would she spend the money. So, she came after Lily on the sly. At the end, she found out Lily put the money into a donation box. She was moved by Lily's charitable behavior.