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: Gina's mother was not happy about bringing her a spare key. Sentence2: But Gina explained she wasn't very far from her home. Sentence3: Her mother calmed down when Gina explained it was only 5 minutes away. Sentence4: Gina stood near her car waiting for her mother. Sentence5: She was relieved when she spotted her car at the stop light.
Gina, Gina's mother