After her parent's deaths Hermione is bound and trapped in her Animagus form, first for her own safety, then to ensure the safety of others during the war. Who is she bound to? Severus Snape, of course..

He had been left, by everyone around him, by himself, and most importantly by that one person, utterly high and dry. Dramionie. The once mighty Malfoy is now nothing but the rejected lover, the imprisoned king.