Betrayal (Lady Grace Mysteries)

Lady Grace Cavendish, Elizabeth I's youngest maid of honor, finds herself in the midst of a battle at sea while posing as a boy aboard the ship of Francis Drake, where she and Masou stowed away in hopes of finding the kidnapped Lady Sarah.

Now that Lady Grace is the Queen’s secret “Lady Pursuivant”—a title normally reserved for those who pursue wrongdoers of the Crown—she can hardly believe that a new mystery has fallen in her lap. But what else can it be when Lady Sarah, a fellow lady-in-waiting known for her fancy clothes and hoity-toity attitude, is missing and feared kidnapped by the dashing Captain Drake. Despite her hard feelings, Grace must help rescue Sarah . . . or Sarah’s sullied reputation will ruin her life. But was Sarah really kidnapped? It’s up to Lady Pursuivant to find out!
From the Hardcover edition.