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: Ellie was worried that she might be pregnant. Sentence2: She was buying groceries and decided to grab a test. Sentence3: In the store bathroom, she took the test. Sentence4: While she waited for an answer, she tried to stay calm. Sentence5: Luckily, the test came out negative.
Ellie