高校留学の入学前３ヶ月間娘がお世話になったホストマザーに、クリスマスプレゼントを送ったことをメールしたい。特に、入学後に素晴らしいファミリーを紹介していただきました。

Dear XXX,
Mari's Mom in Canada

This is Mrs. Tanaka writing.
The holiday season is just around the corner.  You are probably very busy with shopping and decorating your home. 

While Mari stayed at your home, she learned quite a lot from you. That helped her get into a good high school. We thank you very much for your support and kindness to her. 

Now she is with Mrs. Robert and enjoys her school life. Thank you very much for introducing her to a nice family.  Mrs. Robert is very kind to her just like you were. And we feel that Mari is such a lucky girl to be supported by you and Mrs. Robert. Thank you very much!!

We are mailing you a small Christmas gift. We hope you will like it.

We wish you a Merry Christmas and a Prosperous New Year.

Mr. and Mrs. Tanaka