Answering an informal letter
Dear Marion,
It was great to hear from you! Well done with on your exam; I was sure you would get it. My parents didn’t give me any money when I passed mine; you’re a really lucky girl!
You say said you can’t decide if whether to buy a computer game or some clothes. I know you really like computer games and a new racing game is about to be launched released, but keep in mind we have the school party next month. … so I think you should buy some new clothes for the party.
If I were you, I would buy a designer outfit. There’s a new shop in the city with lots of wonderful dresses. Have you heard about it? One of The Chanel dress is absolutely lovely! Also, it’s bright and red, just your favourite colour. color.
Do Drop me a line if you have time and tell me what you finally decide.
Love,
C.
This is very well written. You do a great job of engaging with your reader, showing her that you know her well and that you want what's best for her. You also do a good job of sounded educated and informal at the same time. Very well done. I made a couple of changes to enhance the letter.