What is the main conflict in The Truelove by Patrick O'Brian?

Jack Aubrey and Stephen Maturin continue their voyage aboard the private man-of-war Surprise, hired on Royal Navy service. They depart Port Jackson and make course for the isle of Moahu where French influence is threatening British interests. Their mission is successful but seriously disrupted by the presence of Clarissa Oakes, a young female stowaway who causes contention among the crew and officers.