She is seen as a snobby, rich, egotistical teenager who frequently shows obvious signs of envying Sierra for being more popular than she is, often complimenting her whenever Riley shows anger towards Sierra; however, no matter how greatly she wishes to be as cool as Sierra, she always sticks by Riley and Tasumi's side. She makes her first appearance in "The Jerky Girls" and her last appearance in "A Tale of Two Rileys". She is Riley's other best friend. Even though she hates the popular girls such as Sierra, she is seen wanting to be a part of them so bad, and has a habit of telling Sierra she is cool, even though she doesn't mean to. It also seems that her parents are rich. She sometimes can be hypocritical. She has a younger sister named Tiffany who dated Todd in the episode "A Little Tiff".
For the first two seasons, Abbey wears a pink crop top and multicolored-striped pants, blue flats, and blue headband.