I'd ask and let them know that you were in such a hurry to give it to her that you forgot to put a label on it but would like to so that the family would always know for whom the quilt was made and when. Let them you'd like to fix that and put a label on it now if possible. I wouldn't get upset if it were no where to be found because things happen in sad times but just in case it was still around. I read once that if you were giving a quilt to someone in a nursing home you should put the label on before the quilting because others in the nursing home have been known to steel quilts and take the labels off. If it is in with the quilting it can't be taken off without it being noticed. I thought that would be a good idea no matter what.