The Tropic of Serpents (A Memoir by Lady Trent)

Three years after her fateful journeys through Vystrana, the widowed Mrs. Camherst defies convention to embark on an expedition to the savage, war-torn continent of Eriga, home of the legendary swamp-wyrms of the tropics. Accompanied by an old associate and a runaway heiress, Isabella must brave heat, fevers and palace intrigues to satisfy her boundless fascination with all things draconian.