Given the task definition and input, reply with output. 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: Abby's cheer leading squad was having a car wash fundraiser. Sentence2: Abby had signs made for the car washing event. Sentence3: In addition, Abby purchased sponges, and water buckets as well. Sentence4: However, there was one thing Abby could not plan for, rain. Sentence5: Abby was so sad that her hard work was messed up because of rain.
Abby's cheerleading squad, Abby