Mirror, Mirror

When Hermione convinces Harry to let her study the broken mirror shard that he was given by Sirius, she finds a spyglass charm in an old book in the library used for spying on enemies. The problem is, when she makes an impulsive decision to charm her mirror in the Head Girl's room to spy on Draco Malfoy, little does she know that he isn't the real enemy. AU, Tomione.