Your work is beautiful! If their mother has never acknowledged the ornaments you sent, then it's likely she has never taught her children to acknowledge gifts. Unfortunately, many people don't understand the work and love that goes into a quilt (as well as the gorgeous ornaments you made). I take much joy in every quilt I make, but I've learned that while some people that see them are amazed by them, others don't get it at all. If they're not creative people themselves - they just don't understand.