"Tic toc goes the clock" Ginny yelled and her head jerked to the side, a few seconds later her head made another jerk to the side twice while she in a high pitched voice said "No. No bunny", she felt embarrassed by how little control she had.
A little away from Ginny and her family stood Harry, who was trying his best to find the right platform, when he heard a boy from the group, one of Ginny's brothers, comment on how he hoped none of the other kids from Hogwarts would see him with such a freak sister, and how he didn't understand why Ginny couldn't just have been locked up in the house while the rest of them was getting on the Hogwarts train. It made Harry mad to hear the boy talking about his sister like that, what weird was there about her?
Harry followed the family, since obviously they seemed to know where they were going, and sometimes the girl would make a jerk with her head or yell something random, sometimes both at once, and every time the boy would complain of her.
Ginny felt more and more uncomfortable by the comments her brother would make, which caused her to tic more, she wished her parents had just locked her up in the house by the time they reached the train, she suddenly didn't feel like going to Hogwarts next year, she was so upset that she didn't even notice Harry watching her.