A letter for my daughter's teacher

Dear, Ms./Mr. (Lina's teacher's surname),
 

I'm Lina's mother. I'm so happy to have recieved for your letter. I'm Lina's mother. Lina's notebook was taken away by another student, which is why she failed for that falling exam at last term.（你说的是你女儿的笔记本被小偷偷走了，还是她给同学借了？）, Lina's Notebook was taken away by the other student, However, she didn't tell her, so she was only able to reviewed her (text?)book (课本?), and this resulted in her got a bad score. For her littery notebook, That The student that had her literary notebook was can not able to understand it, and also got a bad score. Lina is a clever girl, but she always doesn't always put all of her best effort energy into her studies. I spent a lots of time to talk about this problem question with Lina, and Then she is would willing like to improve herself. I think, something we should focus on do is encouraging her.

Your friendly
Best regards,

Lina's mother (<your name here)