1)Hi! How are you? I've been so worried about you since I got your letter.Thought I'd drop you a line to help you out.
2)It's great that you've made some new pals , but they sound very good company , if you ask me.No one has the right to tell you how you should look and dress!
3)Also, I don't like the idea of you bunking off school just because your friends think it's cool. Why not tell them that you can meet up after school instead?
4) Well,Ihope it all works out for you . Write back and tell me what happens!
Lots of love,