Yeah, it kinda links to the sequel.

Sarah sat on her desk, waving her wand so the new first years walked in. She stared at one of them. 'Jasmine?' she asked. The small, dark haired girl jumped. She turned to face Sarah. 'Jasmine! I didn't know you were a witch!' Sarah said. The girl stared at her. 'You don't remember me? Do you remember what hurts the most?' Sarah asked, and dawn spread on Jasmine's face. 'Sarah? Is it you?' she asked. Sarah nodded. Jasmine smiled. She had been one of the little baby's at the orphanage when Sarah had been 13. She was only a year old when Sarah was rescued. Everyone settled down. 'Transfiguration, is one of the most difficult branches of magic. But don't worry, I'll always be here to help. In these 7 years at Hogwarts, should in your 6th year you choose to continue Transfiguration, you will explore and hopefully accomplish a lot.' Sarah said, and as McGonagall had done on her first lesson, changed her desk into a pig and back. 'Now.' said Sarah, sitting on her desk 'Hands up who can tell me what a Metamorphmagus is?' One small boy raised his hand. She smiled. 'Yes Mr-' she said. 'Colin Miss. Is it someone who can change their appearance without a wand or a potion' he said. 'Indeed. I myself am one.' Sarah said, and changed her hair to neon pink, then back to blue. 'Now please copy off the board, and what is your name dear?' she asked a small blond girl in the third row. 'Miss Daniels.' she said. 'Please put your magazine away.' Sarah smiled. She turned to the board. 'Oh, and I wouldn't throw that paper aeroplane if I was you.' Sarah added, her back to the class. A boy at the back hastily put it away. Later on, she gave them all a match, and said to transfigure it to a needle. She walked over to Jasmine. 'How's the Orphanage treating you?' she asked in a whisper. 'Same as always.' Jasmine mumbled. 'I only wish I could give you the chance to escape.' Sarah sighed. 'What happened to you anyway?' asked Jasmine, her big green eyes looking up at Sarah. 'You were there one day, then you just went to school then next day, and you never came back.' 'I was found and rescued.' said Sarah simply and she went to go check on the other students. 'I did it!' squealed a small girl. Sarah went over and saw she had indeed done it. 'Well done! 10 points to Gryffindor.' Sarah said, as the bell went. Sarah watched them go out. She went out and let the 6th years in. The filled in. 'Now you lot. I'm am Professor Weasley. And I know what 6th years are like. I have my eye on you.' she said, tapping her magic which was the item of many students gaze. 'Now, if I turn round, I will still see anything you do.' she said. She turned round. One boy stuck his tongue out. 'Thank you for showing us your tongue.' she said, writing on the board. 'Now, for Human Transfiguration it is extremely difficult. You need to be focused, you need to pay attention and you need to stop painting your nails Miss Donald.' Sarah said, much to the surprise of a girl in the third row. She set them the task of changing their hair colour. 'Can you do that miss!' asked a boy. Sarah snorted. 'I can, but I never needed the spell. I'm a metamorphmagus.' said Sarah. 'Show us!' called a girl. Sarah turned her Hair from it's neon blue plait to floor-length deep red. She laughed and turned it back to blue. Everyone started. Sarah saw some pretty disastrous attempts. One girl turned her nose orange and wasn't sure how she did it. A boy grew a spectacular moustache to rival Horace Slughorns. 'Ok, I think we'll stop for today.' said Sarah. She checked her timetable and saw she had the afternoon free. She sat at her desk and started to write a letter.

She smiled and sealed it. She went to the owlery and watched her letter attached to an owl, fly off into the distance.