Meaning: It means that a young female child was expressing joy while engaging in a recreational activity with her doll.
Choice of Words: The word "girl" refers to a young female child. "Smiled" means to form a smile with the mouth, typically expressing pleasure or amusement. "Happily" means in a happy manner. "Played" means to engage in an activity for enjoyment or recreation. "Doll" is a toy that is typically shaped like a human or animal.