I love your idea about being Harry Potter's twin sister - very clever! It's also interesting that you say Harry Potter helped you pass school because I'm sure there's thousands, probably millions of kids the world over that this is true for.
I don't think JK Rowling ever saw the effects and ramifications of her work, to say the least. But lucky for us she did get through writing it!
I did find it sad that you had no friends because that can be a lonely place but I'd suggest you don't change just to please people you may not even like. As Ralph Waldo Emerson said all those years ago...
"To be yourself in a world that is constantly trying to make you something else is the greatest accomplishment."
