Is it possible to cut out the remaining face and put it on a light box so you can trace the features? Then applique the new face onto the old head. Either that or put it on a copier and copy it on to fabric then applique. Maybe even print it on fusible and fuse it to the old head... My mind is reeling with ideas. I hope you can save it. My 40 y/o dtr still has the rag doll whose face I embroidered, there's another idea! Let us know how this works out.