Very nicely done, especially the part about Madeye being his paraniod self. You really went above and beyond yourself for this chapter, and you really struck a chord (or is it cord? I can never remember) with Maria and her fear of losing Harry. Honestly I can't wait for how Hermione reacts once Harry reveals his "true" nature; that is going to be a very enjoyable chapter. I really liked what you did with her in this chapter: you managed to balance her respect for authority with her need to assert herself in a surprisingly small amount of space. I am kind of disappointed you didn't have more Ron, but that should be remedied in the upcoming chapters, right?
Please, please use Slytherin-side Harry more often, I liked the sneak peak of it. Keep up the superb work!