It looks like MSQC half hexagon template. The colored section has been cut in half and a strip added to widen it. The white part looks like the half hex cut in half and turned to make an even row.
If that's what it is, maybe the person doing this made an error in making her ornaments pattern and added the piece in the center vertically instead of horizontally...and created orphan "blocks" when she figured it out. How many of these do you have? If not too many why not add plain fabric in a long vertical row, or add the "ornaments" at the top and plain fabric under it?