Well done. Quinn lets Lyudmila Pavlichenko tell us her story - how she went from a 21 year old mother of a five year old to being a sniper for the Russian army in World War II.  Pavlichenko was part of a Russian delegation that traveled to the United States in 1942 to garner support from the United States to join the fight against Hitler. In Quinn’s story - during the trip to the United States, Lyudmila foils a plot intended to assasinate President Roosevelt. Later, when Eleanor Roosevelt visits Lyudmila in Moscow, they talk in veiled terms about that attempt. 
The war-time romance with her commanding officer -

and his subsequent death,

was a bit over the top for me. But the rest of the book is well done - especially the ending.