Given the following context:

Nearing the end of the 18th century, Napoleon's vast army is sailing towards the Irish coast. The national poet and freedom fighter who goes by the name of "The O'Flynn" is traveling back to the castle where he was born, when he encounters a coach being robbed by rogues. The leader of the outlaws is a man named Hendrigg. The robbery fails thanks to O'Flynn's efforts. He invites the passenger, Lady Benedetta, to take refuge in his castle.
Lady Benedetta eventually agrees to take up the invitation from the elegant O'Flynn, who rode ahead to prepare the castle. When O'Flynn arrives at the castle, Dooley is waiting to arrest him for unpaid debts. O'Flynn gets off by telling the man of a treasure buried inside the castle.
O'Flynn is unaware that Lady Benedetta is really the daughter of the Viceroy of Ireland. She is in turn unaware that agents have been sent out by Napoleon to spy on her, disguised as travelers. They have been informed that Lady Benedetta has Napoleon's plans to invade Britain and is to deliver them to her father. Both Lady Benedetta and the agents arrive to the castle in the night.
Dooley fends off the agents and saves both Lady Benedetta and the unsuspecting O'Flynn. Napoleon's men attack them on their way to Dublin, but again they escape. They manage to give the plans to Lady Benedetta's father. Because of his leadership qualities, O'Flynn is made a captain in the Irish Army.
O'Flynn is attracted to Lady Benedetta, and when he finds out that her fiancé, Lord Sedgemouth, is in favor of Napoleon, he challenges his rival to a duel. Being a swordsman, he wins the duel quite easily, and decides to win Lady Benedetta's heart. The lord counters by letting Lady Benedetta believe that O'Flynn is involved with a courtesan named Fancy Free, which leads the lady to denounce him.

answer the following question:

Who is unaware that agents have been sent by someone to spy on her? 

Lady Benedetta