From the Past (On Hold)

Friends ever since grade school and all the way to middle, until she had to leave.

Natsu and Lucy were best of friends, and had so much fun in their small group, Gray, Lisanna, Erza, Mira, and Natsu's older brother Zeref.
But when middle school started, Lucy had to say goodbye. Her family was moving far, far away to America.

6 years later the blonde girl returns, but she's changed.

Can someone change so much that they're unrecognizable?