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.
Q: Sentence1: Joey's mother took him to the zoo. Sentence2: Joey loved snakes, and he wanted to visit the reptile house. Sentence3: As Joey walked into the exhibit, his mother waited outside. Sentence4: Joey's mother had an intense fear of snakes. Sentence5: Joey was glad that she let him see the snakes.
A:
Joey, Joey's mother