This book was on pre-order until book delivery arrives. 
 
Thicker Than Water by Elvie Grace:
 
The Human Defence League sharpens its stakes, and vampire factions claw for acceptance in a world where monsters are far from fiction. Caught between them is Delilah.

She never asked to be turned — but when Magnus, the enigmatic vampire leader determined to lead his kind out of the shadows and Into the Light, made her his second, immortality fit far too well. Yet, the light exposes as much as it saves.

Then comes Max — the government-appointed professor tasked with humanizing Magnus' message. Brilliant, unyielding, and forbidden, Max should be Delilah's enemy. Torn between her sire, her cause, and the love she was never meant to claim. Delilah's every choice threatens the fragile peace she swore to protect — and a sapphic bond burning quietly beneath the chaos might be her undoing.


Blood is power. Desire is treachery. And Delilah is done hiding her fangs.