Oh dog gone that cat! It is so cute and she did a wonderful job. I guess that cat was upset that she was playing with the doll instead of it.
Flesh colored felt would make a good face to do a small buttonhole stitch around. Just cut it out the same shape as the face on her put over the torn face and stitch. You can then use the puff paint to make a new set of eyes, nose and mouth. Who knows, it might even turn out cuter than the first face.