The Updated Memoirs of Princess Dashkova

The Untold True Story of the Russian Princess who Overthrew a Tsar
Princess Yekaterina Romanovna Vorontsova-Dashkova is a bookish princess intent on studying mathematics at the University of Moscow when the Tsarina dies. She returns to the Winter Castle to stay with the future Tsar and Tsar Consort: the Grand Duke Peter III, and the Grand Duchess Catherine II. Yekaterina quickly befriends the older Catherine and judges her to make a better ruler than her imbecile godfather. The Princess hatches a plan that will change the course of history: a plan to put Catherine the Great on the throne.
This is the true story of the 19 year old princess who overthrew the Tsar of Russia to put Catherine the Great on the throne.