Board Thread:General Discussion/@comment-33623316-20180319010814/@comment-34657163-20180319012104

8Rob wrote: How? Regina doesn't her vault there in HH. She can't prepare more memory potion We never learned how Regina woke up Zelena in the first place either. Unless it was implied somewhere she used part of the drink that was used for her.

She could figure out however Eloise and Ivy did it for her though.