Board Thread:General Discussion/@comment-5634526-20141006155403/@comment-5106672-20141006162142

I think so too, Zelena couldn't possibly know Snow would get pregnant. She just needed to be informed about the return of the other characters so she would be able to have Rumple resurrected for her, rip Regina's heart and steal David's courage, but I think her original plan included Aurora's baby.

In my opinion, she decided to get Snow's baby instead because she imagined that deep down Regina still cared for her somehow. She just wanted to hurt her more.