I also wondered about the vault of hearts. It looks exactly like the one in SB! Are they just re-using props, did Regina built the one in her castle based on the one in Wonderland or is it the same? If it’s the same, how did she get it? Or maybe there’s a vault like that in every world?
My first thought was that the Queen of Hearts was Regina’s mother, too. But the actresses are different … The QoH is played by Jennifer Koening (What's with American actresses being called Jennifer, really???) and Cora by Barbara Hershey.
Maybe the QoH gave Regina some power and that’s why she had Henry Sr. as leverage.
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