What if when Voldemort went to go kill Harry Potter there was actually another baby, a baby girl. What if Lily Potter ended up having twins, a twin girl and boy and not just Harry. What if Harry ended up having a sister, would the story change a bit or a lot, or perhaps it wouldn't change at all. Find out in the story Our Truest Love ***Disclaimer*** Sirius, Hedwig, Fred, Lavender, Parvati, Pettigrew, and Dobby never die, but Xenophilius does die