Nina is renton's cousin who he tries to chat up if I am not mistaken. It has a central story line which has ended when Renton run away to Amsterdam. The book is amazing and made me to think a lot . I know there is also a movie but unfortunately they made it worser that I have expected. I used to write the essay which is connected with this book but my vocabulary list and correct grammar sentences are not pretty acceptable, so I just simply used the site https://www.essayskills.com/ where I bought the essay and get the good mark of my subject. I still have to improve myself to write quality essays without any help but at that moment it was inevitabity.
Wish you good luck. Hope you would write it in a perfect way.