Of Abrasion (Altered Earth #2) by SJ Lee:
 
Altered supremacists. Humanity on the brink of annihilation. Two lives entangled.

Miriam Tanner is in shock. After finding the severed arm of the woman she rejected despite her growing feelings, the Special Operations Group combat medic spirals while genetically engineered Altered refugees flood her human city. As tensions between the two groups escalate, her world shifts again with the nightmare news that the Apostates, Altered terrorists, have overthrown their government.

In attempts to ensure humankind’s survival, Miriam and her team embark on missions to turn the tide of a looming war. But as the stakes rise higher, she’s in danger of not only losing herself, but the fight for victory.

Can Miriam and Echo change the course of the war?

Of Abrasion is the thrilling second book in the Altered Earth dystopian military speculative fiction series. If you like complex characters, fast-paced twists and turns, and human dynamics, then you’ll love S.J. Lee’s descent into chaos.