Dearest Lars,
I'm so happy that your studies are going well. You'll need all of that in the future. There are some books in the secret room that you should be sure to read.
Please make sure your brother and sister are happy and well. Please let me know about how they're doing.
I wish I could see you all right now. I miss you so much. Think of me when you're ringing the Yule Bell this year. I know the preparations will be keeping you busy, so only write back when you have enough time.
I love you,
Mother