Poison Ivy is the victim, in a way, in Detective 823 (Nov. 06), by Dini, Joe Benitez and Victor Llamas.
The story begins with a dramatic attack on Ivy, as a tree busts into the prison and tries to kill her.
Batman brings her to the Batcave, and Robin watches over her as Batman investigates her last hide-out. He finds a cd, and sees that she recorded herself feeding people to one of her plants.
That plant has taken on the personas of those it digested, and is seeking vengeance on Ivy. It calls itself Harvest, and is a pretty scary creature. Fortunately, Batman had a stock of defoliant ready, in case Ivy tried anything, and uses it to destroy the monster.