Lord Voldemort and Severus chose Umbridge to be Harry Potter's training ground.
"Will she die at the hands of The-Boy-Who-Lived?" Lord Voldemort sat at the head of the table, glancing sideways at Severus, as he didn't know much about Harry Potter.
"No, she will die in Azkaban," Severus replied. "She is neither an Animagus nor a very powerful wizard, so she will die in Azkaban."
Chapter 143