I made my parents a 50th anniversary album quilt. It included their 4 children and 9 grandchildren who each wrote sentiments in a block. I had a brother who was stillborn and wanted to include him so I appliqued an angel on the back of the quilt with his name and date.
Mom and Dad loved it :)
So of course I don't think it's tacky at all !! It's a life that, in our case, was almost, but a little baby nonetheless and loved by us.