Scarlet by A. C. Gaughen

Posing as one of Robin Hood's thieves to avoid the evil Lord Gisbourne, Scarlet has kept her identity secret from all of Nottinghamshire. Only Big John and Robin Hood know the truth-that the agile thief posing as a whip of a boy is actually a fearless young woman with a secret past. It's getting harder to hide as Gisbourne's camp seeks to find Scarlet and drive Robin Hood out of Nottinghamshire. But Scarlet's instinct for self-preservation is at war with a strong sense of responsibility to the people who took her in when she was on the run, and she finds it's not so easy to turn her back on her band and townspeople. As Gisbourne draws closer to Scarlet and puts innocent lives at risk, she must decide how much the people of Nottinghamshire mean to her, especially John Little, a flirtatious fellow outlaw, and Robin, whose quick smiles and temper have the rare power to unsettle Scarlet. Full of exciting action, secrets, and romance, this imaginative retelling of the classic tale will have readers following every move of Robin Hood and band of thieves.

This book is part of the "Scarlet" series.
Here are some other books from this series: