Detailed Instructions: 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: Marilyn had had a headache all day. Sentence2: She took some over-the-counter painkillers to subdue the pain. Sentence3: Nothing seemed to help her discomfort. Sentence4: She found it difficult to concentrate all day. Sentence5: Her headache remained until she stepped into her home after her shift.
A:
Marilyn