And as if that wasn’t enough to rob her of all her sleep, Harry seemingly had Voldemort in his head through some kind of link. It allowed the megalomanic, psychopathic dark wizard access to her best friend’s mind. And all the occlumency lessons in the world couldn’t help him, because as much as she adored Harry, she was aware of just how oblivious he was to the things happening around him. And something like occlumency required an iron will and a high degree of self-control.