In Season Six, after much research, a much more powerful Willow casts a spell and Amy is made human once more. Amy repays Willow by introducing her to the warlock Rack and abetting Rack in addicting Willow to dark magic. Later, when Willow decides to give up magic entirely, Amy casts a spell on her, causing her to magically manipulate everything she touches. Willow complains that Amy's actions are encumbering her attempts to quit magic. Amy responds by mocking her, implying that she put the hex on Willow as revenge for being trapped in rat form for years because Willow was not assiduous enough in finding a spell to turn her back into a human. As a result, Willow cuts Amy out of her life entirely.