after the attack you received from the dementors on the train you went to the great dining room with your brother (I mean Harry since you are his sister) and his friends Hermione and Ron.

when you were sitting with the Gryffindors, Draco made a sound to get your attention and when you turned to see what he was going to say, he said:

Is it true that you fainted little Potter? Draco said in a mocking tone while laughing with his friends