Aurabel by Laura Dockrill

Aurabel, a lowly Mermaid from the wrong side of the trench, is attacked by sea beasts and left for dead - and without a tail. Raging with righteous anger, she rebuilds herself a mechanical tail and reinvents herself as a fearless steampunk Mermaid seeking revenge. But she never expected the most important job that was about to drop into her lap.

ISBN: 9781471404245