There is nothing that my friend Jen can't do, but on the inside, she's a little different to me and you." As Jen's friend tells us a story, you will learn a few simple tips on how to stay well with Sickle Cell. A Little Different is the first in the series of My Friend Jen books. The series of children's books aims to create better understanding and awareness of the blood disorder Sickle Cell Anaemia in a fun and informative way.