I have a bit of a problem with the term Strong Female Character. As a comic book reader, I can’t tell you how many times I’ve come across writers and artists merely drawing a woman in a thong kicking ass and calling it empowering. It isn’t. Strong female characters are women who are given as much emphasis, character depth and attention as male leads. A strong female character can be a woman who doesn’t need a man or a woman who is desperate for a man. A woman who saves the day or a woman who needs saving. It all comes from making the character a person.
Buffy Summers was not a strong female character because she was the Slayer, but because she was complex. She was a hero and a saviour, a teenage girl in love, a sister, a daughter, a student, a teacher, and many other things besides. She made mistakes, and she faced up to the consequences of those mistakes. That is strength.