That is a beautiful quilt and clearly you did A LOT of work and time in to it. I agree that the younger generation does not say thank you when they should as well..... however I would be bold enough to get back with the bride or her mother and find out ...if it is not something that fits into her "decor" then you would gladly take it back and get her a gift card. That way you can at least find out if she is going to keep it or give it away.
Just my thoughts.
Rose