150 page novel - storyline already written out in detail - just needs to be written

I have a really big assignment due on March 17th, where I need to hand in a manuscript for a short novel. This book will not be distributed, but simply evaluated and marked by my teacher. The storyline and characters are already plotted out in great detail and the novel simply needs to be written at this point. I've already begun writing it, but I don't think I'll be able to complete it within a matter of a few weeks because of my other work, so I need assistance in completing it. I have already completed around 12 pages of writing for the exposition, so all I really need is for the story to go off from there. The story is essentially about a 18-year old high school student named named Jordan Wells. Jordan has extremely strict parents, and her parents are really pushing a doctor career on her. After her parents forget her birthday, she decides to run away to Japan to participate in a karate competition she's been training for for several months now. She uses the money she's saved up from tutoring and university to rent a small run-down house. She faces several consequences, those ranging from getting used to a new environment, finding her way around town, finding ways to communicate to the people there, and making an income. However, the story mainly revolves around her training. Her entire team is there thinking that she's come with her parents permission, and only her one friends, Cherynne, knows that she's run away. A lot of deep conversations between the two happen. Jordan eventually advances to the final round, and she blacks out. She wakes up in a hospital bed and later learns that she's lost the fight. She goes back to New York, and her family is extremely happy to see her back. Jordan has always had a very rough relationship with her mother, and she was surprised to see tears rolling down her cheeks. The story ends with Jordan learning that you don't need validation from others, but from yourself.