The Demi-Monde: Summer: Book III of The Demi-Monde by Rod Rees
The Demi-Monde was intended to train today's soldiers to fight tomorrow's wars - but its creator had its own secret agenda, and now no one can be allowed to stand in its way . . .
Eight-thousand years ago the Deluge destroyed the empire of the Lilithi, setting the race of super-warriors known as the Grigori loose in the outside world. They have lain hidden until now when - thanks to the creation of the dystopian virtual reality that is the Demi-Monde - they at last stand ready to achieve mastery of the Real World - and to cull HumanKind in the Final Solution.
Three girls stand between them and victory: Norma Williams, trapped in the nightmare that is the Coven, the viciously misandric Sector of the Demi-Monde; Ella Thomas, enslaved by the spirit of Lilith-come-again; and Trixie Dashwood, consumed by her hatred for Heydrich and his evil ForthRight.