Susan Gates 
Venus Angel [PDF ebook] 

After the events of
Viridian, the world is returning to normal. Jay is determined to find Toni, who was turned into a winged plant-hybrid predator, a Venus Angel, and restore her humanity. But Toni doesn»t want to be found. Rogue Cultivars are still on the loose. And Jay»s old enemy, the lethal warlord Viridian, is not dead. Horribly mutated, more powerful than ever before, he lurks underground, waiting for his chance…waiting for Jay. Fantastic sci-fi / dystopia for 11+.