How to thank the mother of the new boyfriend?

Question

My boyfriend invited me out to his mother's birthday dinner the other night and I want to send her a thank you card for having me. We've met before, he and I have been friends for years and we would bump into each other frequently, but this was the first time I had been introduced as his girlfriend so etiquitte is very important. I have no way to contact the grandmother who paid and I really don't want to apear stuffy or snooty, but I want to let them know that the gesture was appreciated.

Dear Name,
Thank you so much for letting me be a part of your birthday festivities the other night. It was wonderful to meet everyone again and to have such a wonderful dinner. I think tiramisu may be my new favorite dessert! Please send my thanks and love to your mother for dinner, it was very much appreciated.
Many thanks,
Me

I thought about saying, "Now I know where Blank get his kindness and sense of humor from!", but I figured that would be too much. Thoughts or suggestions?

Answer 1

Excellent. A few minor editing suggestions:

Dear Name,
Thank you so much for including me in your birthday festivites. It was such a pleasure to see everyone again, and the dinner was wonderful. I think tiramisu may be my new favorite dessert! Please extend my thanks and love to your mother for her hospitality [or: for the wonderful evening / for such an enjoyable evening]; it was very much appreciated.
Many thanks,
Me
(Yes, that last part would be a bit too much.)
Now it is perfect.

Answer 2

I think your letter is beautifully written and entertaining. Doesn't your boyfriend have his Grandmother's address? I don't quite understand that ... but in the absence of getting that address, it'd be acceptable to send it to your boyfriend's Mother. I'm sure she'd talk to the Grandmother, especially after receiving such a nice card. And I think your attention to etiquette should be commended! :)

Answer 3

It's nice to see that courtesy still exists in some places of this world!

My initial thought is that you should leave the note as it is - the added compliment does seem a bit corny, and, forgive me, a little kiss-***. The original note as-is is short, to the point, and friendly/appreciative without coming across as overbearing. You'll hopefully have many more occasions to develop your relationship with his mother (and grandmother) wherein you can then express your thanks more personally, i.e. verbally.

Answer 4

should send a present as well a nice box of chocolate is always good