I think the previous suggestions are good ones. The only other idea I have is if you have more of that fabric, you could undo a portion of the stitching of the binding and quilting in that area, cut out the ripped section, use that piece as a pattern to cut the size of the replacement piece (adding seam allowances) and hand piece the new section in. Redo any quilting removed and reattach the binding. So sorry this happened!