I liked the idea that Jefferson was her brother though now i am not sure. It seems like the producers implied that Regina is the child that was promised to Rumpel by the Miller’s daughter. Hopefully we will get more information about all the Miller’s daughter stuff and Cora in Ep 2. They do need to explain more of Regina and Jefferson’s relationship. I think that one of the only reasons that it makes sense that he wouldn’t kill her is because she is related to him. Though really sicking Rumpel on Regina is just as bad.