Put two twins together

It's 1985 and Sirius decides to change secret keeper. When he picks Peter Voldemort comes. Harry saves his twin sister and becomes the boy-who-lived. When treated equally at home it's different when they're out. When it's time to get to Hogwarts it's going to be worse. With his friends and sisters help it will get easier. If you want me to try and get the other 6, owl me!