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: Susie and her friends were eating dinner in a tent. Sentence2: The girls were enjoying their steaks. Sentence3: All of the sudden, rain started pouring. Sentence4: The tent started to collapse. Sentence5: The girls were trapped.
Friends, Susie