User blog comment:IamJakuhoRaikoben/Chapter 468: Memory of the Stars, Review./@comment-4933386-20160110020640/@comment-9595671-20160110043847

Maybe she might get it back, eventually.

I mean recall what Lucy told Yukino about why she couldn't accept Libra and Pisces keys?

I have a feeling that eventually Lucy will get all 12 keys, the story simply hasn't reached the point where she'll need all of them.