Mischief Fire

Brielle Nova Adams was adopted by Remus Lupin when she was 15. He signs her up for Hogwarts and she goes for her 5th year. Luckily for Brielle Remus taught her the stuff so she won't be behind in Hogwarts. When Harry Potter shows up at number twelve, Grimmauld Place. She gets introduced to them. Harry immediately thinks of her as a sister.
When she gets to Hogwarts and gets put into Gryffindor, she begins her journey. When she becomes friends with Fred and George, she knows she will have fun.
Fred begins to develop feelings for her as does Brielle. Everyone calls Brielle, Elle but Fred calls her Nova.
But during all the drama she may find out a shocking truth that only Dumbledore knows.
Harry forbids anyone to date Brielle.
Too bad Umbridge is out to ruin their year.
During all that, they face up and downs.
Will Fred and Brielle act on their feelings?
Will Harry freak out?