In where Diane's story takes place, there is a place hidden from the apocalyptic world.
The area has buildings based on what it has; prisons, mental institutions, schools, retirement homes and small apartments.

Aurora's place is in the institution because of her eating disorder. She appreciates the compliments for her recovery, but she likes it when people tell her that she's a walking skeleton.

Underground of the area, there is an arena where people fight in. Aurora is the top fighter. She's very strong, even if she is underweight.
She did beat Diane, nearly breaking his skull.
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[There should be a GIF or video here. Update the app now to see it.]