occ: Sorry, busy...
Robert waved at the girls, assuming they knew his sister. He grined boradly, doing loop-dee-loops in the air, just to show off. Lexi rolled her eyes, and walked into the other girls compartment, overhearing their words. "I'll come too." She said.
Sarah turned around "who -"
occ can Sarah have a crush on Robert?
occ: Sure
Once she was in her compartment and all the girls were in there, she shut the door and used a spell to make sure that no one could see in. She looked at the girls and said, "Are you ready for this?"
September was under a Disillusionment Charm. They didn't know she was there. (She hoped.)
(What is she going to do? It sounds like it is against the rules)
occ: Well, they are already casting spells and flying dragons, so I don't think it can get worse.
"Yeah." Lexi sad, not really interested. She had better things to do, like blow up the trains toilet for example, or throw some Dungbombs into the first years compartment.
"ok. But don't tell anyone." she said. Blake closed her eyes and concentrated for a moment. Within 3 seconds, she had transformed into a fox. She bounced a bit then sat down and yipped at the girls.
September "appeared", cheeks flushed. "You're an Animagus," she said plainly, stating the obvious.
She changed back, "Yup!" 
"I think I'd rather be a cat," September said, as if people revealed themselves to be Animagi on a regular basis.
"Meh," she replied. "I honestly think cats are to overplayed, but that's just my opinion. I don't judge."
September said nothing. "I've got to check on Ell," she said simply, and opening the compartment door she made her way up the aisle.
Blake waves good-bye and closed the compartment door again.
The train slowed. They were arriving at Hogwarts.
Sarah looked out the window.
Blake looked outside and saw the castle ahead of them. She had a warm feeling of security around her school. She put her stuff back into her trunk and got ready to leave.
Sarah stood and looked at her stuff.
September got off the train, greeted the gamekeeper (still Hagrid, for anyone interested), and got into a carriage. It was empty. She hoped Carl and Lexi would hurry up and get there. As she looked out the window into the night at the hordes of students in the lamplit walkway, she wondered whether Blake and Sarah might join them.
Blake got off the train, greeted Hagrid, and ident to join September in her carriage. "Hi," she greeted. "Looking forward to the new school year?"
Lexi was outside of the train, waiting for her stupid brother. Once he appeared, marching up to her with that stupid smirk on his face, she slapped him. "You were not supposed to reveal him!" She hissed. He rolled his eyes. "Oh please. I'll just tell everyone it was an illusion." Just then, Carl ran up. "Come on you two! It's time to go!"