Beharie called "Mama" a big episode for the sisters and for Abbie as a witness. "They basically have to go back into their past and [deal with things] they don't necessarily want to revisit," she previewed, and that's especially tough for Abbie because she'd rather not talk about her past. In fact, Abbie rather enjoys being a witness, even though it's hard, because "there's a power" to it that Abbie finds "liberating." Having to revisit and explore her troubling childhood was "a really difficult journey," both for the actress and the character.
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