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: Amy started doing drugs at 16. Sentence2: She tried very many drugs and was hooked on heroin. Sentence3: She did heroin for 4 years before she got sick. Sentence4: She lost a lot of weight. Sentence5: She died because of the drugs.
Amy