"I’m a female writer and, what’s interesting about the Wizarding World is, when you take physical strength out of the equation, a woman can fight just the same as a man can fight, a woman can do magic just as powerfully as a man can do magic and I consider that I’ve written a lot of well-rounded female characters in these books." - JK Rowling
Oh, I'm sorry, did your movies start out with Harry being 17? Oh, I'm sorry, did you only have two completely inaccurate movies? Oh, I'm sorry, was your favourite female character played by someone who was twenty years older than the actual character? I could go on and on, but that would require a 1 hour power point presentation.
Because she liked Hermione so much, she became just like her and that's why we need good, strong female characters and role models