It was no secret that Harry hated living with the Dursley’s. But sadly, after his parents death, Petunia was the only relative. He was informed that his parents were magical and he was a wizard. Hagrid was supposed to bring him to get his supplies for this school, but instead he was waiting in this huge living room for someone. Hagrid informed him that someone else would take him.

Turns out that Petunia wasn’t Lily’s only sister. You were another Evans sister. After so long of arguing with Dumbledore, you managed to gain custody of your nephew. You were the person who is going to take Harry to Diagon Alley. He was waiting in your living room, this being the first meeting since his parents were alive.