I think I know how you feel. I made large quilts for my son and his wife and my grandson for Christmas 2008, and have yet to get a thank you. My daughter and her husband and my other grandson are still thanking me and sending pictures of them using the quilts. It really hurt that my son and his wife couldn't say thanks. Makes me sad! So, I know how you feel. Hopefully the lady will realize that you did a good thing for her and you are a special lady.
Don't let this experience spoil your heart of gold.
Have a great day!