Harry Potter
Harry is a girl (any flower or jewel name in any language) with an older twin brother.
Twin brother (TB any name you want) is in love with her.
Dumbledore is evil and killed their parents and blamed Voldemort.
Voldemort is good.
They find special trunk in Dureleys' attic (a lot like the one in Not Normal by Radaslab but with more things).
All Wealeys' but Author, Bill, Charlie, Percy, and the Twins are bad.