Discuss the below in detail:
Q: Tina has been having a boring week. All of her friends are busy with other things. Her mother feels sorry for her. She tells Tina that if it rains on Saturday, she will take her to the movies. It rains on Saturday; however, Tina's mother changes her mind and will not take her to the movies. Can Tina legally force her mother to take her to the movies? Why or why not? What law, if any is in play?