The heroine is an original character, Flora Foley. She isn't a good person in the traditional sense, and could even be called bad. She's not a do-gooder. She knows exactly how calculating she is and where her loyalties lie, and has her own schemes and ambitions.
Pure-blood. Slytherin. I may add a lot of original plot elements, but the main storyline will still follow the original. The heroine's feelings may be unstable at first, but later she'll find someone she truly wants to give her heart to.
Right now, the most likely CP candidates are Harry or Draco. We'll see how things develop.
Prologue
"They're my friends. You're just a little better than they are, Draco."
"After all this time, you're still just like you were as a child, oh great Chosen One."
If you don't like the evil woman character, feel free to drop this. The heroine is pretty awful, and the main plot follows the original.
Theme: Harry Potter fan fiction.