Bloody Wonderland by Crea Reitan

The Queens have managed more success in the Second Purging than Mal ever intended them to have. Laddenworn itself is starting to bleed again, as it did when The Culling began centuries ago. Patches are being burned, Villages destroyed, Colonies demolished.
In the midst of the horror, Mal is determined to carve out a little bit of time with her men. Because if they can’t communicate, they’re not likely to trust each other. And if you can’t trust someone to have your back in a battle that will result in many deaths, their likelihood of succeeding is minimal.
But a betrayal comes where she least expects it and turns her entire world upside down. She finds herself a prisoner and her men are slowly tearing themselves apart in her absence. How is she supposed to fix Wonderland if she can’t even keep her men together – or get herself out of the steel grasp that holds her.