In my book, if there are three layers and they are all bound together with stitching....no matter how small...it's a quilt!
Definition of QUILT
1
a: a bed coverlet of two layers of cloth filled with padding (as down or batting) held in place by ties or stitched designs
There are little 1 inch tall dolls, so they probably could use a quilt on their bed! :-D :lol: