Dickens is from Alabama, so her southern accent is the real thing. She went to New York to lose her accent. Even so, directors will often ask her to use her southern accent, even if the role doesn't call for one.
Dickens "Fear the Walking Dead" character, Madison "Maddie" Clark, is a high school guidance counselor. Maddie, Dickens says, "is a badass. She’s fearless, she’s troubled; she’s dark, complicated and pretty focused. She’s strong and yet she has sort of a dark, questionable background."