The Lord and the Red-Headed Hornet

In this charming Regency Romance, Amelia and Aurelius are orphaned twins. She's a bossy, fiery red-head. Her handsome brother wants to join the army and fight against Napoleon. But he's all she has and she wants him to become a diplomat instead. She gets a job with an aristocrat hoping he will provide the contacts. Needless to say, it doesn't work out exactly as any of them expects.