Oliver You need to get to Blackpool (I doubt it, but if you need a Portkey for that, let me know), meet Susannah Barnes at her aunt's house and Portkey from there to the nearest Floo (you will get both addresses when you pick up the portkey here). I will have arranged for a Floo exit as close to King's Cross as possible, and that's when the hard part of your job begins: You need to not lose sight of Susannah. She's a sweet girl, but she is curious and has a tendency to wander off. Get her through to the platform and safely onto the train. While you don't have to, I know from experience that the kids like when there are adults to wave to when the train leaves.