I'm not so sure. They claim to not have the power to send us back - Most of what they talk about when people are coming and going is a Door. Maker knows what that means; I've seen no signs of anything literal.

[ Not a huge, ominous door, that is. ]

Hope did, yes. [ She isn't sure that the others have the ability. ] He's done the same for... dozens. There have been a lot of deaths.

[ Which makes sense, considering the nature of Hadriel. ]