B&A: I'm creating the worst character in fictional history - need help?

She also has to have different parents. Maybe hers were killed or something. Or she has a missing brother/sister somewhere. And she has to save the day. She's never picked up a weapon before in her life and considers fighting a horrid thing. Yet, when she does, she's an expert at everything! She even surpasses those who have been fighting for years! All those coming to get her and kill her get defeated in just one look though they've spent their lifetime mastering their skill. And, while they're being defeated, they also mention how much they are in love with her. They can't help it. She's just so perfect. And all the girls love her as well. And she has the perfect boyfriend who would never ever ever date anyone and all the girls wanted to be with him, but alas, he's saving himself for someone special. And though he swore he would never date, he finds himself so compelled to her he has to date her and ignore his previous rule.