Board Thread:General Discussion/@comment-24179430-20140320191818/@comment-8345449-20140321014835

Prince of Rascia wrote: Arctucrus wrote: ...which she got once she was already in the castle. XD So no. ;) Don't forget it wasn't Regina's castle that was locked by blood magic but Cora's crypt. And if Zelena wanted to mislead Regina into thinking they are sisters, the best way to do it was to break into Cora's crypt.

But that doesn't explain how she got out of the blood-locked room in Regina's home. Unless that potion which she made from Regina's blood has permanent effects which makes blood magic seems a little too easily defeated.