Board Thread:Spoilers!/@comment-25361971-20150128004028/@comment-1826156-20150221215832

I have a feeling Zelena ccould still be alive too, her death wa s abit of a non death...she wasn't stabbed or burned or anything, she was shattered and the dust blew away. Of course, that was pretty much waht happened to the Witch of the East in the Wizard of Oz, she turned to dust and was killed. But Zelena's magic might live on.

More than likely, Zelena is just in a flashback, maybe she had a chance to make a deal with the queens of darkness.