No one knows who really defeated the dark lord on Halloween 1981. Everyone just assumes that it was Harry Potter, the Boy Who Lived. When Rebecca is send away to live with Petunia because of her brothers fame, someone has something else in mind and interferes with time itself. [Re-published]
When Voldemort attacked the Potters in 1981, he did not know who he attacked. Was it Harry or Rebecca? Dumbledore thinks it was Harry and sends Rebecca away. Little did he know that Rebecca was sent to the Founders and what she can do. Dumbles and Weasley bashings. AU where James and Lily are alive.