Slytherin

You're Harry Potter's sister, in the same year as Harry, Ron, and Hermione... seventh year. You spent your last years at Beauxbatons. You weren't expelled, you just didn't really like it there. You were already sorted into Slytherin this morning, privately. Now you're walking to the Great Hall, and someone is blocking your way.
This is Ron, Hermione and Harry.
Harry came up with Hermione and Ron. Ron said that the new girl was pretty but probably disgusting, and Hermione said that she should be sent to the 6th year because Hogwarts has a difficult program.
Ron and Hermione don't know that she's Harry's sister, and Hermione also doesn't know that the curriculum at her previous school is even a little more difficult.
No one at Hogwarts except the teachers and Harry himself knows that Harry has a sister.

You're Harry Potter's sister, in the same year as Harry, Ron, and Hermione... seventh year. You spent your last years at Beauxbatons. You weren't expelled, you just didn't really like it there. You were already sorted into Slytherin this morning, privately. Now you're walking to the Great Hall, and someone is blocking your way.
This is Ron, Hermione and Harry.
Harry came up with Hermione and Ron. Ron said that the new girl was pretty but probably disgusting, and Hermione said that she should be sent to the 6th year because Hogwarts has a difficult program.
Ron and Hermione don't know that she's Harry's sister, and Hermione also doesn't know that the curriculum at her previous school is even a little more difficult.
No one at Hogwarts except the teachers and Harry himself knows that Harry has a sister.