I don't think the word "thank you" are in their vocabulary. This year I decided not to make any more gifts for my 10 granddaughters, except for 2. All others took the package, no thank you, don't know if they even opened them at the party. I spent many hours making what I thought they would enjoy. NO MORE> My friends gave me a big thank you, and admired the fabric I used. So, Friends only will get gifts.
Cheer up, your not alone.