Greenhow was captured in August. She was placed under house arrest. But she continued her spying activities. In 1862 after an espionage hearing, she was imprisoned for nearly five months in Washington, DC. Then she was deported to the Confederate States. Greenhow traveled to Richmond, Virginia and continued to work for the confederacy. She sailed to Europe to represent the Confederacy in a diplomatic mission to France and England. She also wrote and published her memoir in London. The book was popular in England. She wanted to return to America. She took with her $2,000 in Gold. On her voyage back, her ship ran aground off Wilmington, North Carolina. A Union gunboat had chased them up the Cape Fear River. Greenhow and one other passenger tried to escape in a rowboat. Weighed down with gold she drowned when her rowboat overturned. She was honored with a Confederate military funeral.