One possible version:
Mary is my friend. She is 13 years old. She is from France. We knew each other when we were 7. She is tall and thin. Mary also has long black hair. She is good at English and her favourite subject is English. She often helps me with my English. Her dream is to be an English teacher. She is really a nice and friendly girl.Do you want to make friends with her?

One possible version:
Mary is my friend. She is 13 years old. She is from France. We knew each other when we were 7. She is tall and thin. Mary also has long black hair. She is good at English and her favourite subject is English. She often helps me with my English. Her dream is to be an English teacher. She is really a nice and friendly girl.Do you want to make friends with her?