User blog comment:IamJakuhoRaikoben/Chapter 467: Mother's Key, Review./@comment-73.34.84.50-20160104185020/@comment-86.66.207.48-20160105142543

Maybe this is the reason Mashima created Brandish, to help Lucy's devlopment. If Zeref and his troops arrive near FT maybe Brandish will save Lucy and help her to find a way to destroy Alvarez