Board Thread:Character Discussion/@comment-3038174-20140219010859/@comment-24386552-20140308201658

I am really thinking Zelena is Regina's sister. She will probably say to Regina, in one of the later episodes, like 16 or 18, along the lines "Mother always loved you more. She paid attention to you instead of me. Basically tossing me aside." That would confirm that they are sisters.