Baroness Orczy 
Mam’zelle Guillotine [EPUB ebook] 

Just think on it! Three aristocrats who were being sent to Paris for trial were kidnapped away from under the very nose of the highly efficient police. Spirited away! But who could have engineered so damnable a trick and then disappeared as if the earth had swallowed them up?
This is also the story of Gabrielle, who is imprisoned, but then released from the Bastille when it is stormed during the Revolution. Hungry for revenge, she becomes the only female executioner for the new Republic and is known as Mam’zelle Guillotine.