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Batgirl: Silent Running - Comics by comiXology
After helping Batman during Gotham's darkest hours, Cassandra Cain was quickly accepted as the new Batgirl. But now as Gotham resurrects itself, she must deal with her own inner demons. When an attempt to fix her inability to speak robs her of her sixth sense, she trains with the original Batgirl, fighting to regain her former prowess and live up to the expectations of Batman.