In this task, you're given a story (which contains five sentences only). Your task is to find all the characters which are available in the given story.

Sentence1: Amy called her mom to tell her she made the JV volleyball team. Sentence2: Her mother was proud of her. Sentence3: Amy was proud of herself since she was only in the 8th grade. Sentence4: She asked her mom if they could go to her favorite restaurant. Sentence5: Her mother agreed they should go out to eat to celebrate.
Amy, Amy's mom, Jv volleyball team