User blog comment:FairyRaven/Fairy Tail Chapter 303: A Battle On Two Fronts, Review and Commentary/@comment-112.205.76.218-20121012105856/@comment-3970561-20121012155011

well I read what other people said and after I gave it a lot of thought I changed my mind! it's more likely Angel!

Sora(no) means "sky" in Japanese--> Angel wanted to go to the sky, the ribbon that Sorano wears in the flashback is like Angels, Yukino and Angel are both Celestial magicians and look alike=> guys/girls you are right, she is Angel after all!