Rea's Blood or Navy Girl - Worlds of the Timestream: The Throne, #2

Samadeya-Qayin and Pelik-Qayin--the alternate continuations of the repentant and unrepentant Cain respectively--continue their perpetual dual. Amy Rea is the adopted daughter of Samadeya-Qayin, the ally of the Almighty. From Amy's post-Academy appointment as second officer to the Royal Army Naval Corps frigate Boudicca, she's rapidly promoted to commodore, then Vice-Admiral, and finally Admiral of the Orange aboard Victory.
Her novel tactics and how she deals with her shipmates become Royal Navy doctrine. Rea cultivates a band of fellow officers who will follow her to hell and back. Many do so for her last battle against enemy nations Spain and France off Trafalgar Point, where she's shot down by snipers in a resolute stand on Victory's quarterdeck. But who is Amy Rae, what is her great secret, and why does she have so many look-alikes?