Maybe I'll have finished this story and only 1 person will have commented

But the impact never came. Sarah opened her eyes and found herself on the platform. She was gaping at the giant train as Sirius, Ron and Hermione came trough the barrier. Sarah looked back and saw a big iron archway, with a sign saying 'Muggle London'. Sirius took a cadge she had though to be Ron's of the trolly and gave it to Sarah. Sarah pulled the cover of and gasped, for in the cadge was a small, fluffy, tawny owl, looking up at her and hooting happily. 'I brought her for you when you were off with Harry, Ron and Hermione getting ice cream.' Sirius smiled. 'Now go, the train is about to leave. Just say Sirius to her, and she will find me.' Sirius gave Sarah a gentle push onto the train while Harry put her trunk upon the luggage rack in their compartment. She waved as the door shut.
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Sirius waved at watched as Sarah waved into the Distance. He felt happiness, and a little lonely, thinking now he had to go back to Grimmude place, alone except for that little toerag of a house elf...
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Sarah waved until Sirius was out of sight, then sat down into the compartment, her hand clenched around the bag of coins Sirius had given her, for the food trolly. 5 minutes later, the door opened and Sarah, thinking it was the food trolley, looked up, into the pale drawn face of a boy. 'Well well well, look who it is. Potty, the Weasel and the Mudblood.' said the Boy. Before Harry could open his mouth, Sarah had stood up. Harry closed his mouth. 'If I chuck a stick, will you leave? Or do I need to hex you before you leave?' she asked fiercely. The boy stepped back. He muttered something to the two boys with him, and they left. Sarah sat back down. 'Who does he think he is?' she asked. 'That' said Harry 'was Draco Malfoy. And that must of been a record time to get rid of him, we have never done it so fast.' He smiled.