Ethel A - this is a sad reality of the online world, it seems.
I've only been on the forum a short while but I've seen others talking about how their work has suddenly appeared elsewhere - sometimes for sale, sometimes just credited to someone else. I know I've seen this addressed in some of the vlogs I follow as well.
I'm glad you have corrected the error here and we know who to send our appreciation to - it really is a lovely quilt!!!